xtd::basic_string< char_t, traits_t, allocator_t > Class Template Reference

Inheritance diagram for xtd::basic_string< char_t, traits_t, allocator_t >:

Definition

template<class char_t, class traits_t, class allocator_t>
class xtd::basic_string< char_t, traits_t, allocator_t >

Represents text as a sequence of character units.

Namespace

xtd

Library

xtd.core

Remarks

A basic_string is a sequential collection of characters that's used to represent text. A xtd::basic_string object is a sequential collection of char that represent a basic_string. The value of the xtd::basic_string object is the content of the sequential collection of char_t, and unlike std::basic_string<char_t> that value is immutable (that is, it is read-only).

If you want the same mutable basic_string class, you can use xtd::text::basic_string_builder <char_t> class.

xtd::basic_string implements std::basic_string<char> and therefore offers the full (immutable) API of std::basic_string.

Several aliases for common character types are provided:

Type	Definition
xtd::string	xtd::basic_string <char>
xtd::u16string	xtd::basic_string <xtd::char16>
xtd::u32string	xtd::basic_string <xtd::char32>
xtd::u8string	xtd::basic_string <xtd::char8>
xtd::wstring	xtd::basic_string <xtd::wchar>

Namespace

xtd

Library

xtd.core

Remarks

A basic_string is a sequential collection of characters that's used to represent text. A xtd::basic_string object is a sequential collection of char that represent a basic_string. The value of the xtd::basic_string object is the content of the sequential collection of char_t, and unlike std::basic_string<char_t> that value is immutable (that is, it is read-only).

If you want the same mutable basic_string class, you can use xtd::text::basic_string_builder <char_t> class.

xtd::basic_string implements std::basic_string<char> and therefore offers the full (immutable) API of std::string.

Public Methods
Returns a reference to the character at specified location pos. / / / / Returns Reference to the requested character. / Exceptions xtd::index_out_of_range_exception If `index` is not within the range of the string. const_reference at(size_type pos) const {return operator [](pos);} / Compares two character sequences. / Parameters str The other string to compare to. / Returns / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares this string to str. / A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows: / * First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). / * Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: / / | Condition | Result | Return value | / | ----------------------------------------------------------— | ----------------------------— | ---------— | / | traits_t::compare(data1, data2, rlen) < 0 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 | data1 is equal to data2 | 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 | data1 is greater than data2 | > 0 | / | traits_t::compare(data1, data2, rlen) > 0 | data1 is greater than data2 | > 0 | int32 compare(const basic_string & str) const {return chars_.compare(str);} / Compares two character sequences. / Parameters pos1 The position of the first character in this string to compare. / count1 The number of characters of this string to compare. / str The other string to compare to. / Returns / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares a [pos1, pos1 + count1) substring of this string to str. / * If count1 > size() - pos1, the substring is [pos1, size()). / A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows: / * First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). / * Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: / / | Condition | Result | Return value | / | ----------------------------------------------------------— | ----------------------------— | ---------— | / | traits_t::compare(data1, data2, rlen) < 0 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 | data1 is equal to data2 | 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 | data1 is greater than data2 | > 0 | / | traits_t::compare(data1, data2, rlen) > 0 | data1 is greater than data2 | > 0 | int32 compare(size_type pos1, size_type count1, const basic_string & str) const {return chars_.compare(pos1, count1, str);} / Compares two character sequences. / Parameters pos1 The position of the first character in this string to compare. / count1 The number of characters of this string to compare. / str The other string to compare to. / pos2 The position of the first character of the given string to compare. / Returns / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares a [pos1, pos1 + count1) substring of this string to a substring [pos2, pos2 + count2) of str. / * If count1 > size() - pos1, the first substring is [pos1, size()). / * If count2 > str.size() - pos2, the second substring is [pos2, str.size()). / A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows: / * First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). / * Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: / / | Condition | Result | Return value | / | ----------------------------------------------------------— | ----------------------------— | ---------— | / | traits_t::compare(data1, data2, rlen) < 0 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 | data1 is equal to data2 | 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 | data1 is greater than data2 | > 0 | / | traits_t::compare(data1, data2, rlen) > 0 | data1 is greater than data2 | > 0 | int32 compare(size_type pos1, size_type count1, const basic_string & str, size_type pos2) const {return chars_.compare(pos1, count1, str, pos2);} / Compares two character sequences. / Parameters pos1 The position of the first character in this string to compare. / count1 The number of characters of this string to compare. / str The other string to compare to. / pos2 The position of the first character of the given string to compare. / count2 The number of characters of the given string to compare. / Returns A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the value parameter: / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares a [pos1, pos1 + count1) substring of this string to a substring [pos2, pos2 + count2) of str. / * If count1 > size() - pos1, the first substring is [pos1, size()). / * If count2 > str.size() - pos2, the second substring is [pos2, str.size()). / A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows: / * First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). / * Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: / / | Condition | Result | Return value | / | ----------------------------------------------------------— | ----------------------------— | ---------— | / | traits_t::compare(data1, data2, rlen) < 0 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 | data1 is equal to data2 | 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 | data1 is greater than data2 | > 0 | / | traits_t::compare(data1, data2, rlen) > 0 | data1 is greater than data2 | > 0 | int32 compare(size_type pos1, size_type count1, const basic_string & str, size_type pos2, size_type count2) const {return chars_.compare(pos1, count1, str, pos2, count2);} / Compares two character sequences. / Parameters s pointer to the character string to compare to. / Returns / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares this string to the null-terminated character sequence beginning at the character pointed to by s with length traits_t::length(s). / A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows: / * First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). / * Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: / / | Condition | Result | Return value | / | ----------------------------------------------------------— | ----------------------------— | ---------— | / | traits_t::compare(data1, data2, rlen) < 0 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 | data1 is less than data2 | < 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 | data1 is equal to data2 | 0 | / | traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 | data1 is greater than data2 | > 0 | / | traits_t::compare(data1, data2, rlen) > 0 | data1 is greater than data2 | > 0 | int32 compare(const_pointer s) const {return chars_.compare(s);} / Compares two character sequences. / Parameters pos1 The position of the first character in this string to compare. / count1 The number of characters of this string to compare. / s pointer to the character string to compare to. / Returns / * Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order. / * Zero if both character sequences compare equivalent. / * Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order. / Remarks Compares a [pos1, pos1 + count1) substring of this string to the null-terminated character sequence beginning at the character pointed to by s with length traits_t::length(s). / * If count1 > size() - pos1, the substring is [pos1$ , size()). @remarks A character sequence consisting ofcount1characters starting atdata1is compared to a character sequence consisting ofcount2characters starting atdata2as follows: First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2). Then compare the sequences by calling traits_t::compare(data1, data2, rlen)`. For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows: Condition Result Return value traits_t::compare(data1, data2, rlen) < 0 data1 is less than data2 < 0 traits_t::compare(data1, data2, rlen) == 0 and size1 < size2 data1 is less than data2 < 0 traits_t::compare(data1, data2, rlen) == 0 and size1 == size2 data1 is equal to data2 0 traits_t::compare(data1, data2, rlen) == 0 and size1 > size2 data1 is greater than data2 > 0 traits_t::compare(data1, data2, rlen) > 0 data1 is greater than data2 > 0
int32	compare (size_type pos1, size_type count1, const_pointer s) const
int32	compare (size_type pos1, size_type count1, const_pointer s, size_type count2) const
	Compares two character sequences.
int32	compare_to (const object &value) const
	Compares this instance with a specified xtd::object and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified xtd::object.
int32	compare_to (const basic_string &value) const noexcept override
	Compares this instance with a specified xtd::basic_string object and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified string.
virtual bool	contains (value_type value) const noexcept
	Returns a value indicating whether a specified char occurs within this basic_string.
virtual bool	contains (const basic_string &value) const noexcept
	Returns a value indicating whether a specified substring occurs within this basic_string.
bool	equals (const object &obj) const noexcept override
	Determines whether this instance and a specified object, which must also be a xtd::basic_string object, have the same value.
bool	equals (const basic_string &value) const noexcept override
	Determines whether this instance and another specified xtd::basic_string object have the same value.
bool	equals (const basic_string &value, bool ignore_case) const noexcept
	Determines whether this instance and another specified xtd::basic_string object have the same value, ignoring or honoring their case.
bool	ends_with (value_type value) const noexcept
	Determines whether the end of this basic_string matches the specified character.
bool	ends_with (value_type value, bool ignore_case) const noexcept
	Determines whether the end of this basic_string matches the specified character, ignoring or honoring their case.
bool	ends_with (const basic_string &value) const noexcept
	Determines whether the end of this basic_string matches the specified basic_string.
bool	ends_with (const basic_string &value, bool ignore_case) const noexcept
	Determines whether the end of this basic_string instance matches the specified basic_string, ignoring or honoring their case.
bool	ends_with (const basic_string &value, xtd::string_comparison comparison_type) const noexcept
	Determines whether the end of this basic_string matches the specified basic_string when compared using the specified comparison option.
size_type	find (const basic_string &str) const
	Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.
size_type	find (const basic_string &str, size_type pos) const
	Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.
size_type	find (const_pointer s, size_type pos, size_type count) const
	Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.
size_type	find (const_pointer s) const
	Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.
size_type	find (const_pointer s, size_type pos) const
	Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.
size_type	find (value_type ch) const
	Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.
size_type	find (value_type ch, size_type pos) const
	Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.
size_type	find_first_of (const basic_string &str) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.
size_type	find_first_of (const basic_string &str, size_type pos) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_of (const_pointer s, size_type pos, size_type count) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_of (const_pointer s) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_of (const_pointer s, size_type pos) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_of (char_t ch) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_of (char_t ch, size_type pos) const
	Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (const basic_string &str) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.
size_type	find_first_not_of (const basic_string &str, size_type pos) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (const_pointer s, size_type pos, size_type count) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (const_pointer s) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (const_pointer s, size_type pos) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (char_t ch) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_first_not_of (char_t ch, size_type pos) const
	Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.
size_type	find_last_of (const basic_string &str) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.
size_type	find_last_of (const basic_string &str, size_type pos) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_of (const_pointer s, size_type pos, size_type count) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_of (const_pointer s) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_of (const_pointer s, size_type pos) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_of (char_t ch) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_of (char_t ch, size_type pos) const
	Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.
size_type	find_last_not_of (const basic_string &str) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.
size_type	find_last_not_of (const basic_string &str, size_type pos) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
size_type	find_last_not_of (const_pointer s, size_type pos, size_type count) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
size_type	find_last_not_of (const_pointer s) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
size_type	find_last_not_of (const_pointer s, size_type pos) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
size_type	find_last_not_of (char_t ch) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
size_type	find_last_not_of (char_t ch, size_type pos) const
	Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.
allocator_type	get_allocator () const
	Returns the allocator associated with the string.
virtual const base_type &	get_base_type () const noexcept
	Returns the underlying base type.
xtd::size	get_hash_code () const noexcept override
	Returns the hash code for this basic_string.
enumerator_type	get_enumerator () const noexcept override
	Returns an enumerator that iterates through a collection.
xtd::size	index_of (const basic_string &value) const noexcept
	Reports the index of the first occurrence of the specified basic_string in this basic_string.
xtd::size	index_of (const basic_string &value, xtd::size start_index) const
	Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position.
xtd::size	index_of (const basic_string &value, xtd::size start_index, xtd::size count) const
	Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.
xtd::size	index_of (value_type value) const noexcept
	Reports the index of the first occurrence of the specified character in this basic_string.
xtd::size	index_of (value_type value, xtd::size start_index) const
	Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position.
xtd::size	index_of (value_type value, xtd::size start_index, xtd::size count) const
	Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.
xtd::size	index_of_any (const xtd::array< value_type > &values) const noexcept
	Reports the index of the first occurrence in this instance of any character in a specified array of characters.
xtd::size	index_of_any (const xtd::array< value_type > &values, xtd::size start_index) const
	Reports the index of the first occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.
xtd::size	index_of_any (const xtd::array< value_type > &values, xtd::size start_index, xtd::size count) const
	Reports the index of the first occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.
basic_string	insert (xtd::size start_index, const basic_string &value) const
	Inserts a specified instance of basic_string at a specified index position in this instance.
bool	is_empty () const noexcept
	Indicates whether this basic_string is an empty basic_string ("").
xtd::size	last_index_of (const basic_string &value) const noexcept
	Reports the index of the last occurrence of the specified basic_string in this basic_string.
xtd::size	last_index_of (const basic_string &value, xtd::size start_index) const
	Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position.
xtd::size	last_index_of (const basic_string &value, xtd::size start_index, xtd::size count) const
	Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.
xtd::size	last_index_of (value_type value) const noexcept
	Reports the index of the last occurrence of the specified character in this tring.
xtd::size	last_index_of (value_type value, xtd::size start_index) const
	Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position.
xtd::size	last_index_of (value_type value, xtd::size start_index, xtd::size count) const
	Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.
xtd::size	last_index_of_any (const xtd::array< value_type > &values) const noexcept
	Reports the index of the last occurrence in this instance of any character in a specified array of characters.
xtd::size	last_index_of_any (const xtd::array< value_type > &values, xtd::size start_index) const
	Reports the index of the last occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.
xtd::size	last_index_of_any (const xtd::array< value_type > &values, xtd::size start_index, xtd::size count) const
	Reports the index of the last occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.
basic_string	pad_left (xtd::size total_width) const noexcept
	Right-aligns the characters in this basic_string, padding with spaces on the left for a specified total length.
basic_string	pad_left (xtd::size total_width, char32 padding_char) const noexcept
	Right-aligns the characters in this basic_string, padding with spaces on the left for a specified total length.
basic_string	pad_right (xtd::size total_width) const noexcept
	Left-aligns the characters in this basic_string, padding with spaces on the right for a specified total length.
basic_string	pad_right (xtd::size total_width, char32 padding_char) const noexcept
	Left-aligns the characters in this basic_string, padding with spaces on the right for a specified total length.
basic_string	quoted () const
	Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML.
basic_string	quoted (value_type delimiter) const
	Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML ith specified delimiter.
basic_string	quoted (value_type delimiter, value_type escape) const
	Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML ith specified delimiter and escape.
basic_string	remove (xtd::size start_index) const
	Deletes all the characters from this basic_string beginning at a specified position and continuing through the last position.
basic_string	remove (xtd::size start_index, xtd::size count) const
	Deletes all the characters from this basic_string beginning at a specified position and continuing through the last position.
basic_string	replace (value_type old_char, value_type new_char) const noexcept
	Replaces all occurrences of a specified char_t in this basic_string with another specified char_t.
basic_string	replace (const basic_string &old_string, const basic_string &new_string) const noexcept
	Replaces all occurrences of a specified basic_string in this basic_string with another specified basic_string.
size_type	rfind (const_pointer s) const
	Finds the last substring that is equal to the given character sequence. The search begins at xtd::basic_string::nposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position following xtd::basic_string::npos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as xtd::basic_string::npos, the whole string will be searched. / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal tostr. size_type rfind(const basic_string & str) const {return chars_.rfind(str);} / @brief Finds the last substring that is equal to the given character sequence. The search begins atposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position followingpos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed aspos, the whole string will be searched. / @param str The string to search for. / @param pos The position at which to start the search / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal tostr. size_type rfind(const basic_string & str, size_type pos) const {return chars_.rfind(str, pos);} / @brief Finds the last substring that is equal to the given character sequence. The search begins atposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position followingpos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed aspos, the whole string will be searched. / @param str The string to search for. / @param pos The position at which to start the search / @param count The length of substring to search for. / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal to the range [s, s + count). / @remarks This range may contain null characters. If [s,s + count) is not a valid range, the behavior is undefined. size_type rfind(const_pointer s, size_type pos, size_type count) const {return chars_.rfind(s, pos, count);} / @brief Finds the last substring that is equal to the given character sequence. The search begins at xtd::basic_string::npos and proceeds from right to left (thus, the found substring, if any, cannot begin in a position following xtd::basic_string::npos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as xtd::basic_string::npos, the whole string will be searched.
size_type	rfind (const_pointer s, size_type pos) const
	Finds the last substring that is equal to the given character sequence. The search begins at pos and proceeds from right to left (thus, the found substring, if any, cannot begin in a position following pos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as pos, the whole string will be searched.

Additional Inherited Members
using	value_type
	Represents the xtd::collections::generic::ienumerable value type.
using	iterator
	Represents the iterator of xtd::collections::generic::ienumerable value type.
using	const_iterator
	Represents the const iterator of xtd::collections::generic::ienumerable value type.
using	iterator
	Represents the iterator of enumerable value type.
using	const_iterator
	Represents the const iterator of enumerable value type.
using	enumerable_type
	Represents the ienumerable enumerable type.
using	source_type
	Represents the ienumerable source type.
using	ienumerable
	Represents the ienumerable value type.
using	list
	Represents the list value type.
	object ()=default
	Create a new instance of the ultimate base class object.
virtual type_object	get_type () const noexcept
	Gets the type of the current instance.
template<class object_t>
xtd::unique_ptr_object< object_t >	memberwise_clone () const
	Creates a shallow copy of the current object.
virtual xtd::string	to_string () const noexcept
	Returns a xtd::string that represents the current object.
virtual const_iterator	begin () const
	Returns an iterator to the first element of the enumerable.
virtual iterator	begin ()
	Returns an iterator to the first element of the enumerable.
virtual const_iterator	cbegin () const
	Returns an iterator to the first element of the enumerable.
virtual const_iterator	cend () const
	Returns an iterator to the element following the last element of the enumerable.
virtual const_iterator	end () const
	Returns an iterator to the element following the last element of the enumerable.
virtual iterator	end ()
	Returns an iterator to the element following the last element of the enumerable.
char_t	aggregate (const std::function< char_t(const char_t &, const char_t &)> &func) const
	Applies an accumulator function over a sequence.
char_t	aggregate (const char_t &seed, const std::function< char_t(const char_t &, const char_t &)> &func) const
	Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
accumulate_t	aggregate (const accumulate_t &seed, const std::function< accumulate_t(const char_t &, const accumulate_t &)> &func) const
	Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value.
char_t	aggregate (const char_t &seed, const std::function< char_t(const char_t &, const char_t &)> &func, const std::function< char_t(const char_t &)> &result_selector) const
	Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.
result_t	aggregate (const accumulate_t &seed, const std::function< accumulate_t(const char_t &, const accumulate_t &)> &func, const std::function< result_t(const accumulate_t &)> &result_selector) const
	Applies an accumulator function over a sequence. The specified seed value is used as the initial accumulator value, and the specified function is used to select the result value.
bool	all (const std::function< bool(const char_t &)> &predicate) const
	Determines whether all elements of a sequence satisfy a condition.
bool	any () const noexcept
	Determines whether a sequence contains any elements.
bool	any (const std::function< bool(const char_t &)> &predicate) const
	Determines whether any element of a sequence satisfies a condition.
auto	append (const char_t &element) const noexcept
	Appends a value to the end of the sequence.
auto	as_enumerable () const noexcept
	Returns the input typed as xtd::collections::generic::ienumerable <type_t>.
auto	average () const noexcept
	Computes the average of a sequence of source_t values.
auto	cast () const noexcept
	Casts the elements of an xtd::collections::generic::ienumerable to the specified type.
auto	chunk (size_t size) const
	Splits the elements of a sequence into chunks of size at most size.
auto	concat (const ienumerable< char_t > &second) const noexcept
	Concatenates two sequences.
bool	contains (const char_t &value) const noexcept
	Determines whether a sequence contains a specified element by using the default equality comparer.
bool	contains (const char_t &value, const xtd::collections::generic::iequality_comparer< char_t > &comparer) const noexcept
	Determines whether a sequence contains a specified element by using a specified equality comparer.
size_t	count () const noexcept
	Returns the number of elements in current sequence.
size_t	count (const std::function< bool(const char_t &)> &predicate) const noexcept
	Returns a number that represents how many elements in the specified sequence satisfy a condition.
xtd::size	count (const char_t &value) const noexcept
	Returns the number of elements with the specified value.
auto	count_by (const std::function< key_t(const char_t &)> &key_selector) const noexcept
	Returns the count of elements in the current sequence grouped by key.
auto	count_by (const std::function< key_t(const char_t &)> &key_selector, const iequality_comparer< key_t > &key_comparer) const noexcept
	Returns the count of elements in the current sequence grouped by key.
auto	default_if_empty () const noexcept
	Returns the elements of the specified sequence or the type parameter's default value in a singleton collection if the current sequence is empty.
auto	default_if_empty (const char_t &default_value) const noexcept
	Returns the elements of the specified sequence or the specified value in a singleton collection if the current sequence is empty.
auto	distinct () const noexcept
	Returns distinct elements from a sequence by using the default equality comparer to compare values.
auto	distinct (const xtd::collections::generic::iequality_comparer< char_t > &comparer) const noexcept
	Returns distinct elements from a sequence by using a specified xtd::collections::generic::iequality_comparer <type_t> to compare values.
char_t	first_or_default (const std::function< bool(const char_t &)> &predicate, const char_t &default_value) const noexcept
	Returns the first element of the sequence that satisfies a condition, or a specified default value if no such element is found.
char_t	first_or_default (const std::function< bool(const char_t &)> &predicate) const noexcept
	Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
char_t	first_or_default (const char_t default_value) const noexcept
	Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
char_t	first_or_default () const noexcept
	Returns the first element of the sequence that satisfies a condition or a default value if no such element is found.
auto	order_by (const std::function< char_t(const char_t &)> &key_selector) const
	Sorts the elements of a sequence in ascending order according to a key.
auto	order_by (const std::function< key_t(const char_t &)> &key_selector) const
	Sorts the elements of a sequence in ascending order according to a key.
auto	order_by_descending (const std::function< key_t(const char_t &)> &key_selector) const
	Sorts the elements of a sequence in descending order according to a key.
auto	order_by_descending (const std::function< char_t(const char_t &)> &key_selector) const
	Sorts the elements of a sequence in descending order according to a key.
auto	select (const std::function< result_t(const char_t &)> &selector) const
	Projects each element of a sequence into a new form.
auto	select (const std::function< char_t(const char_t &)> &selector) const
	Projects each element of a sequence into a new form.
auto	select (const std::function< result_t(const char_t &, size_t index)> &selector) const
	Projects each element of a sequence into a new form by incorporating the element's index.
auto	select (const std::function< char_t(const char_t &, size_t index)> &selector) const
	Projects each element of a sequence into a new form by incorporating the element's index.
const list< char_t > &	to_list () const noexcept
	Creates a xtd::collections::generic::list <type_t> from an xtd::collections::generic::ienumerable <type_t>.
auto	where (const std::function< bool(const char_t &)> &predicate) const
	Filters a sequence of values based on a predicate.
auto	where (const std::function< bool(const char_t &, size_t)> &predicate) const
	Filters a sequence of values based on a predicate. Each element's index is used in the logic of the predicate function.
template<class object_a_t, class object_b_t>
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.
template<class object_a_t, class object_b_t>
static bool	reference_equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are the same instance.
static target_collection_t::const_iterator	to_const_iterator (typename source_collection_t::const_iterator &value, const source_collection_t &source_collection, const target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.
static target_collection_t::const_iterator	to_const_iterator (typename source_collection_t::const_iterator &value, source_collection_t &source_collection, target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.
static target_collection_t::const_iterator	to_iterator (typename source_collection_t::const_iterator &value, const source_collection_t &source_collection, const target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.
static target_collection_t::iterator	to_iterator (typename source_collection_t::iterator &value, const source_collection_t &source_collection, const target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.
static target_collection_t::const_iterator	to_iterator (typename source_collection_t::const_iterator &value, source_collection_t &source_collection, target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.
static target_collection_t::iterator	to_iterator (typename source_collection_t::iterator &value, source_collection_t &source_collection, target_collection_t &target_collection) noexcept
	Converts source iterator to target iterator.

Member Function Documentation

compare()

template<class char_t, class traits_t, class allocator_t>

int32 xtd::basic_string< char_t, traits_t, allocator_t >::compare ( size_type pos1, size_type count1, const_pointer s, size_type count2 ) const

inline

Compares two character sequences.

Parameters

pos1	The position of the first character in this string to compare.
count1	The number of characters of this string to compare.
s	pointer to the character string to compare to.
count2	The number of characters of the given string to compare.

Returns

• Negative value if *this appears before the character sequence specified by the arguments, in lexicographical order.
• Zero if both character sequences compare equivalent.
• Positive value if *this appears after the character sequence specified by the arguments, in lexicographical order.

Remarks

Compares a [pos1, pos1 + count1) substring of this string to the characters in the range [s, s + count2). The characters in [s, s + count2) may include null characters.

• If count1 > size() - pos1, the substring is [pos1, size()).

A character sequence consisting of count1 characters starting at data1 is compared to a character sequence consisting of count2 characters starting at data2 as follows:

• First, calculate the number of characters to compare, as if by size_type rlen = std::min(count1, count2).
• Then compare the sequences by calling traits_t::compare(data1, data2, rlen). For standard strings this function performs character-by-character lexicographical comparison. If the result is zero (the character sequences are equal so far), then their sizes are compared as follows:

Condition	Result	Return value
traits_t::compare(data1, data2, rlen) < 0	data1 is less than data2	< 0
traits_t::compare(data1, data2, rlen) == 0 and size1 < size2	data1 is less than data2	< 0
traits_t::compare(data1, data2, rlen) == 0 and size1 == size2	data1 is equal to data2	0
traits_t::compare(data1, data2, rlen) == 0 and size1 > size2	data1 is greater than data2	> 0
traits_t::compare(data1, data2, rlen) > 0	data1 is greater than data2	> 0

compare_to() [1/2]

template<class char_t, class traits_t, class allocator_t>

int32 xtd::basic_string< char_t, traits_t, allocator_t >::compare_to ( const object & value ) const

inline

Compares this instance with a specified xtd::object and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified xtd::object.

Parameters

value

An object that evaluates to a xtd::basic_string.

Returns

A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the value parameter.

Value	Condition
Less than zero	This instance precedes value.
Zero	This instance has the same position in the sort order as value.
Greater than zero	This instance follows value.

Exceptions

xtd::argument_exception

`value` is not a xtd::basic_string.

compare_to() [2/2]

template<class char_t, class traits_t, class allocator_t>

int32 xtd::basic_string< char_t, traits_t, allocator_t >::compare_to ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlineoverridevirtualnoexcept

Compares this instance with a specified xtd::basic_string object and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified string.

Parameters

value

The string to compare with this instance.

Returns

A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the value parameter.

Value	Condition
Less than zero	This instance precedes value.
Zero	This instance has the same position in the sort order as value.
Greater than zero	This instance follows value.

Implements xtd::icomparable< basic_string< char_t, traits_t, allocator_t > >.

contains() [1/2]

template<class char_t, class traits_t, class allocator_t>

virtual bool xtd::basic_string< char_t, traits_t, allocator_t >::contains ( value_type value ) const

inlinevirtualnoexcept

Returns a value indicating whether a specified char occurs within this basic_string.

Parameters

value

The char to seek.

Returns

true if the value parameter occurs within this basic_string; otherwise, false.

contains() [2/2]

template<class char_t, class traits_t, class allocator_t>

virtual bool xtd::basic_string< char_t, traits_t, allocator_t >::contains ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlinevirtualnoexcept

Returns a value indicating whether a specified substring occurs within this basic_string.

Parameters

value

The basic_string to seek.

Returns

true if the value parameter occurs within this basic_string, or if value is the empty basic_string (""); otherwise, false.

equals() [1/3]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::equals ( const object & obj ) const

inlineoverridevirtualnoexcept

Determines whether this instance and a specified object, which must also be a xtd::basic_string object, have the same value.

Parameters

obj	The basic_string to compare to this instance.

Returns

true if obj is a xtd::basic_string and its value is the same as this instance; otherwise, false.

Reimplemented from xtd::object.

equals() [2/3]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::equals ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlineoverridevirtualnoexcept

Determines whether this instance and another specified xtd::basic_string object have the same value.

Parameters

value

The basic_string to compare to this instance.

Returns

true if the value of the value parameter is the same as the value of this instance; otherwise, false.

Remarks

This method performs an ordinal (case-sensitive) comparison.

Implements xtd::iequatable< basic_string< char_t, traits_t, allocator_t > >.

equals() [3/3]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::equals ( const basic_string< char_t, traits_t, allocator_t > & value, bool ignore_case ) const

inlinenoexcept

Determines whether this instance and another specified xtd::basic_string object have the same value, ignoring or honoring their case.

Parameters

value	The basic_string to compare to this instance.
ignore_case	true to ignore case when comparing this instance and value; otherwise, false

Returns

true if the value of the value parameter is the same as the value of this instance; otherwise, false.

Remarks

This method performs an ordinal comparison.

ends_with() [1/5]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::ends_with ( value_type value ) const

inlinenoexcept

Determines whether the end of this basic_string matches the specified character.

Parameters

value

The char_t to compare to the substring at the end of this instance.

Returns

true if value matches the end of this instance; otherwise, false.

ends_with() [2/5]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::ends_with ( value_type value, bool ignore_case ) const

inlinenoexcept

Determines whether the end of this basic_string matches the specified character, ignoring or honoring their case.

Parameters

value	The char_t to compare to the substring at the end of this instance.
ignore_case	true to ignore case during the comparison; otherwise, false.

Returns

true if value matches the end of this instance; otherwise, false.

ends_with() [3/5]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::ends_with ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlinenoexcept

Determines whether the end of this basic_string matches the specified basic_string.

Parameters

value

The basic_string to compare to the substring at the end of this instance.

Returns

true if value matches the end of this instance; otherwise, false.

ends_with() [4/5]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::ends_with ( const basic_string< char_t, traits_t, allocator_t > & value, bool ignore_case ) const

inlinenoexcept

Determines whether the end of this basic_string instance matches the specified basic_string, ignoring or honoring their case.

Parameters

value	The string to compare to the substring at the end of this instance.
ignore_case	true to ignore case during the comparison; otherwise, false.

Returns

bool true if value matches the end of the specified basic_string; otherwise, false.

ends_with() [5/5]

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::ends_with ( const basic_string< char_t, traits_t, allocator_t > & value, xtd::string_comparison comparison_type ) const

inlinenoexcept

Determines whether the end of this basic_string matches the specified basic_string when compared using the specified comparison option.

Parameters

value	The string to compare to the substring at the end of this instance.
comparison_type	One of the enumeration values that determines how this basic_string and value are compared.

Returns

bool true if value matches the end of the specified basic_string; otherwise, false.

find() [1/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( const basic_string< char_t, traits_t, allocator_t > & str ) const

inline

Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to str.

find() [2/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( const basic_string< char_t, traits_t, allocator_t > & str, size_type pos ) const

inline

Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.

Parameters

str	The string to search for.
pos	The position at which to start the search

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to str.

find() [3/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( const_pointer s, size_type pos, size_type count ) const

inline

Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.

Parameters

str	The string to search for.
pos	The position at which to start the search
count	The length of substring to search for.

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to the range [s, s + count).

This range may contain null characters. If [s, s + count) is not a valid range, the behavior is undefined.

find() [4/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( const_pointer s ) const

inline

Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.

Parameters

s	The pointer to a character string to search for.

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to the character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find() [5/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( const_pointer s, size_type pos ) const

inline

Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.

Parameters

s	The pointer to a character string to search for.
pos	The position at which to start the search

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to the character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find() [6/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( value_type ch ) const

inline

Finds the first substring equal to the given character sequence. Search begins at 0, i.e. the found substring must not begin in a position preceding 0.

Parameters

ch	The character to search for.

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first character ch (treated as a single-character substring by the formal rules below).

find() [7/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find ( value_type ch, size_type pos ) const

inline

Finds the first substring equal to the given character sequence. Search begins at pos, i.e. the found substring must not begin in a position preceding pos.

Parameters

ch	The character to search for.
pos	The position at which to start the search

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first character ch (treated as a single-character substring by the formal rules below).

find_first_of() [1/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( const basic_string< char_t, traits_t, allocator_t > & str ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_first_of() [2/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( const basic_string< char_t, traits_t, allocator_t > & str, size_type pos ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

str	The string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_first_of() [3/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( const_pointer s, size_type pos, size_type count ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.
count	The length of character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in the range [s, s + count). This range can include null characters.

If [s, s + count) is not a valid range, the behavior is undefined.

find_first_of() [4/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( const_pointer s ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_first_of() [5/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( const_pointer s, size_type pos ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_first_of() [6/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( char_t ch ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_first_of() [7/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_of ( char_t ch, size_type pos ) const

inline

Finds the first character equal to one of the characters in the given character sequence. The search considers only the range [pos, size()). If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_first_not_of() [1/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( const basic_string< char_t, traits_t, allocator_t > & str ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_first_not_of() [2/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( const basic_string< char_t, traits_t, allocator_t > & str, size_type pos ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

str	The string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_first_not_of() [3/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( const_pointer s, size_type pos, size_type count ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.
count	The length of character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in the range [s, s + count). This range can include null characters.

If [s, s + count) is not a valid range, the behavior is undefined.

find_first_not_of() [4/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( const_pointer s ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_first_not_of() [5/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( const_pointer s, size_type pos ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_first_not_of() [6/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( char_t ch ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_first_not_of() [7/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_first_not_of ( char_t ch, size_type pos ) const

inline

Finds the first character equal to none of the characters in the given character sequence. The search considers only the range [pos, size()). If all characters in the range can be found in the given character sequence, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_last_of() [1/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( const basic_string< char_t, traits_t, allocator_t > & str ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_last_of() [2/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( const basic_string< char_t, traits_t, allocator_t > & str, size_type pos ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

str	The string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_last_of() [3/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( const_pointer s, size_type pos, size_type count ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.
count	The length of character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in the range [s, s + count). This range can include null characters.

If [s, s + count) is not a valid range, the behavior is undefined.

find_last_of() [4/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( const_pointer s ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_last_of() [5/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( const_pointer s, size_type pos ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_last_of() [6/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( char_t ch ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_last_of() [7/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_of ( char_t ch, size_type pos ) const

inline

Finds the last character equal to one of characters in the given character sequence. The exact search algorithm is not specified. The search considers only the range [​0​, pos]. If none of the characters in the given character sequence is present in the range, xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_last_not_of() [1/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( const basic_string< char_t, traits_t, allocator_t > & str ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned. @parzm str The string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_last_not_of() [2/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( const basic_string< char_t, traits_t, allocator_t > & str, size_type pos ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

str	The string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in str.

find_last_not_of() [3/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( const_pointer s, size_type pos, size_type count ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.
count	The length of character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in the range [s, s + count). This range can include null characters.

If [s, s + count) is not a valid range, the behavior is undefined.

find_last_not_of() [4/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( const_pointer s ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_last_not_of() [5/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( const_pointer s, size_type pos ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

s	The pointer to a character string identifying characters to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to one of the characters in character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

find_last_not_of() [6/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( char_t ch ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

find_last_not_of() [7/7]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::find_last_not_of ( char_t ch, size_type pos ) const

inline

Finds the last character equal to none of the characters in the given character sequence. The search considers only the range [​0​, pos]. If all characters in the range can be found in the given character sequence,xtd::basic_string::npos will be returned.

Parameters

ch	The character to search for.
pos	The position at which to begin searching.

Returns

Position of the found character or xtd::basic_string::npos if no such character is found.

Remarks

Finds the first character equal to ch.

get_allocator()

template<class char_t, class traits_t, class allocator_t>

allocator_type xtd::basic_string< char_t, traits_t, allocator_t >::get_allocator ( ) const

inline

Returns the allocator associated with the string.

Returns

The associated allocator.

get_base_type()

template<class char_t, class traits_t, class allocator_t>

virtual const base_type & xtd::basic_string< char_t, traits_t, allocator_t >::get_base_type ( ) const

inlinevirtualnoexcept

Returns the underlying base type.

Returns

The underlying base type.

get_hash_code()

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::get_hash_code ( ) const

inlineoverridevirtualnoexcept

Returns the hash code for this basic_string.

Returns

A hash code.

Reimplemented from xtd::object.

get_enumerator()

template<class char_t, class traits_t, class allocator_t>

enumerator_type xtd::basic_string< char_t, traits_t, allocator_t >::get_enumerator ( ) const

inlineoverridevirtualnoexcept

Returns an enumerator that iterates through a collection.

Returns

An xtd::collections::generic::enumerator object that can be used to iterate through the collection.

Implements xtd::collections::generic::ienumerable< char_t >.

index_of() [1/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlinenoexcept

Reports the index of the first occurrence of the specified basic_string in this basic_string.

Parameters

value

An unicode character to seek

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

index_of() [2/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( const basic_string< char_t, traits_t, allocator_t > & value, xtd::size start_index ) const

inline

Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position.

Parameters

value	An unicode character to seek
start_index	The search starting position

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

index_of() [3/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( const basic_string< char_t, traits_t, allocator_t > & value, xtd::size start_index, xtd::size count ) const

inline

Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.

Parameters

value	An unicode character to seek
start_index	The search starting position
count	The number of character positions to examine

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

index_of() [4/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( value_type value ) const

inlinenoexcept

Reports the index of the first occurrence of the specified character in this basic_string.

Parameters

value

An unicode character to seek

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

index_of() [5/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( value_type value, xtd::size start_index ) const

inline

Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position.

Parameters

value	An unicode character to seek
start_index	The search starting position

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

index_of() [6/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of ( value_type value, xtd::size start_index, xtd::size count ) const

inline

Reports the index of the first occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.

Parameters

value	An unicode character to seek
start_index	The search starting position
count	The number of character positions to examine

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

index_of_any() [1/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of_any ( const xtd::array< value_type > & values ) const

noexcept

Reports the index of the first occurrence in this instance of any character in a specified array of characters.

Parameters

values

An unicode character array containing one or more characters to seek

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

index_of_any() [2/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of_any	(	const xtd::array< value_type > &	values,
		xtd::size	start_index ) const

Reports the index of the first occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.

Parameters

values	An unicode character array containing one or more characters to seek
start_index	The search starting position

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

index_of_any() [3/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::index_of_any	(	const xtd::array< value_type > &	values,
		xtd::size	start_index,
		xtd::size	count ) const

Reports the index of the first occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.

Parameters

values	An unicode character array containing one or more characters to seek
start_index	The search starting position
count	The number of character positions to examine.

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

insert()

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::insert ( xtd::size start_index, const basic_string< char_t, traits_t, allocator_t > & value ) const

inline

Inserts a specified instance of basic_string at a specified index position in this instance.

Parameters

start_index	The index position of the insertion.
value	The basic_string to insert.

Returns

A new basic_string equivalent to this instance but with value inserted at position start_index.

Remarks

If start_index is equal to the length of this instance, value is appended to the end of this instance.

For example, the return value of "abc".Insert(2, "XYZ") is "abXYZc".

is_empty()

template<class char_t, class traits_t, class allocator_t>

bool xtd::basic_string< char_t, traits_t, allocator_t >::is_empty ( ) const

inlinenoexcept

Indicates whether this basic_string is an empty basic_string ("").

Returns

true if the value parameter is null or an empty basic_string (""); otherwise, false.

Deprecated

Replaced by xtd::basic_string::is_empty(const xtd::basic_string&) - Will be removed in version 0.4.0.

last_index_of() [1/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( const basic_string< char_t, traits_t, allocator_t > & value ) const

inlinenoexcept

Reports the index of the last occurrence of the specified basic_string in this basic_string.

Parameters

value

An unicode character to seek

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

last_index_of() [2/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( const basic_string< char_t, traits_t, allocator_t > & value, xtd::size start_index ) const

inline

Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position.

Parameters

value	An unicode character to seek
start_index	The search starting position

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

last_index_of() [3/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( const basic_string< char_t, traits_t, allocator_t > & value, xtd::size start_index, xtd::size count ) const

inline

Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.

Parameters

value	An unicode character to seek
start_index	The search starting position
count	The number of character positions to examine

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

last_index_of() [4/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( value_type value ) const

inlinenoexcept

Reports the index of the last occurrence of the specified character in this tring.

Parameters

value

An unicode character to seek

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

last_index_of() [5/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( value_type value, xtd::size start_index ) const

inline

Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position.

Parameters

value	An unicode character to seek
start_index	The search starting position

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

last_index_of() [6/6]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of ( value_type value, xtd::size start_index, xtd::size count ) const

inline

Reports the index of the last occurrence of the specified character in this basic_string. The search starts at a specified character position and examines a specified number of character positions.

Parameters

str	A basic_string to find last index of.
value	An unicode character to seek
start_index	The search starting position
count	The number of character positions to examine

Returns

The index position of value if that character is found, or std::basic_string<char_t>::npos if it is not.

Exceptions

xtd::index_out_of_range_exception

start_index + count are greater than the length of this instance.

last_index_of_any() [1/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of_any ( const xtd::array< value_type > & values ) const

noexcept

Reports the index of the last occurrence in this instance of any character in a specified array of characters.

Parameters

values

An unicode character array containing one or more characters to seek

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

last_index_of_any() [2/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of_any	(	const xtd::array< value_type > &	values,
		xtd::size	start_index ) const

Reports the index of the last occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.

Parameters

values	An unicode character array containing one or more characters to seek
start_index	The search starting position

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

last_index_of_any() [3/3]

template<class char_t, class traits_t, class allocator_t>

xtd::size xtd::basic_string< char_t, traits_t, allocator_t >::last_index_of_any	(	const xtd::array< value_type > &	values,
		xtd::size	start_index,
		xtd::size	count ) const

Reports the index of the last occurrence in this instance of any character in a specified array of characters. The search starts at a specified character position.

Parameters

values	An unicode character array containing one or more characters to seek
start_index	The search starting position
count	The number of character positions to examine.

Returns

The index position of the first occurrence in this instance where any character in values was found; otherwise, std::basic_string<char_t>::npos if no character in values was found.

pad_left() [1/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::pad_left ( xtd::size total_width ) const

inlinenoexcept

Right-aligns the characters in this basic_string, padding with spaces on the left for a specified total length.

Parameters

total_width

The number of characters in the resulting basic_string, equal to the number of original characters plus any additional padding characters.

Returns

A new basic_string that is equivalent to the specified basic_string, but right-aligned and padded on the left with as many spaces as needed to create a length of total_width. Or, if total_width is less than the length of the specified basic_string, a new basic_string object that is identical to the specified basic_string.

Remarks

An unicode space is defined as hexadecimal 0x20.

The pad_left(const std::basic_string<char_t>&, int) method pads the beginning of the returned basic_string. This means that, when used with right-to-left languages, it pads the right portion of the basic_string..

pad_left() [2/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::pad_left ( xtd::size total_width, char32 padding_char ) const

inlinenoexcept

Right-aligns the characters in this basic_string, padding with spaces on the left for a specified total length.

Parameters

total_width	The number of characters in the resulting basic_string, equal to the number of original characters plus any additional padding characters.
paddingChar	An unicode padding character.

Returns

A new basic_string that is equivalent to the specified basic_string, but right-aligned and padded on the left with as many spaces as needed to create a length of total_width. Or, if total_width is less than the length of the specified basic_string, a new basic_string object that is identical the specified basic_string.

Remarks

An unicode space is defined as hexadecimal 0x20.

The pad_left(const std::basic_string<char_t>&, int) method pads the beginning of the returned basic_string. This means that, when used with right-to-left languages, it pads the right portion of the basic_string..

pad_right() [1/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::pad_right ( xtd::size total_width ) const

inlinenoexcept

Left-aligns the characters in this basic_string, padding with spaces on the right for a specified total length.

Parameters

totalWidth

The number of characters in the resulting basic_string, equal to the number of original characters plus any additional padding characters.

Returns

A new basic_string that is equivalent to the specified basic_string, but left-aligned and padded on the right with as many spaces as needed to create a length of totalWidth. Or, if totalWidth is less than the length of the specified basic_string, a new basic_string object that is identical to the specified basic_string.

Remarks

An unicode space is defined as hexadecimal 0x20.

The PadRight(const std::basic_string<char_t>&, int) method pads the end of the returned basic_string. This means that, when used with right-to-left languages, it pads the left portion of the basic_string..

pad_right() [2/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::pad_right ( xtd::size total_width, char32 padding_char ) const

inlinenoexcept

Left-aligns the characters in this basic_string, padding with spaces on the right for a specified total length.

Parameters

totalWidth	The number of characters in the resulting basic_string, equal to the number of original characters plus any additional padding characters.
paddingChar	An unicode padding character.

Returns

A new basic_string that is equivalent to the specified basic_string, but left-aligned and padded on the tight with as many spaces as needed to create a length of totalWidth. Or, if totalWidth is less than the length of the specified basic_string, a new basic_string object that is identical to the specified basic_string.

Remarks

An unicode space is defined as hexadecimal 0x20.

The xtd::basic_string::pad_right method pads the end of the returned basic_string. This means that, when used with right-to-left languages, it pads the left portion of the basic_string..

quoted() [1/3]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::quoted ( ) const

inline

Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML.

Returns

A new quoted basic_string.

Remarks

the delimiter is set to

" 

by default and the escape is set to \ by default.

for more information see std::quoted.

quoted() [2/3]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::quoted ( value_type delimiter ) const

inline

Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML ith specified delimiter.

Parameters

delimiter

The character to use as the delimiter, defaults to "</tt>. @return A new quoted basic_string. @remarks for more information see <a href="https://en.cppreference.com/w/cpp/io/manip/quoted" >std::quoted.

quoted() [3/3]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::quoted ( value_type delimiter, value_type escape ) const

inline

Allows insertion and extraction of quoted strings, such as the ones found in CSV or XML ith specified delimiter and escape.

Parameters

delimiter

The character to use as the delimiter, defaults to "</tt>. @param escape The character to use as the escape character, defaults to <tt>\\</tt>. @return A new quoted basic_string. @remarks for more information see <a href="https://en.cppreference.com/w/cpp/io/manip/quoted" >std::quoted.

remove() [1/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::remove ( xtd::size start_index ) const

inline

Deletes all the characters from this basic_string beginning at a specified position and continuing through the last position.

Parameters

start_index

The position to begin deleting characters.

Returns

A new basic_string object that is equivalent to this basic_string less the removed characters.

remove() [2/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::remove ( xtd::size start_index, xtd::size count ) const

inline

Deletes all the characters from this basic_string beginning at a specified position and continuing through the last position.

Parameters

start_index	The position to begin deleting characters.
count	The number of characters to delete.

Returns

A new basic_string object that is equivalent to this basic_string less the removed characters.

replace() [1/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::replace ( value_type old_char, value_type new_char ) const

inlinenoexcept

Replaces all occurrences of a specified char_t in this basic_string with another specified char_t.

Parameters

old_char	A char_t to be replaced.
new_char	A char_t to replace all occurrences of old_char.

Returns

A new basic_string equivalent to the specified basic_string but with all instances of old_char replaced with new_char.

replace() [2/2]

template<class char_t, class traits_t, class allocator_t>

basic_string xtd::basic_string< char_t, traits_t, allocator_t >::replace ( const basic_string< char_t, traits_t, allocator_t > & old_string, const basic_string< char_t, traits_t, allocator_t > & new_string ) const

inlinenoexcept

Replaces all occurrences of a specified basic_string in this basic_string with another specified basic_string.

Parameters

old_string	A basic_string to be replaced.
new_string	A basic_string to replace all occurrences of old_string.

Returns

A new basic_string equivalent to the specified basic_string but with all instances of old_string replaced with new_string.

Remarks

If new_string is empty, all occurrences of old_string are removed

rfind() [1/2]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::rfind ( const_pointer s ) const

inline

Finds the last substring that is equal to the given character sequence. The search begins at xtd::basic_string::nposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position following xtd::basic_string::npos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as xtd::basic_string::npos, the whole string will be searched. / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal tostr. size_type rfind(const basic_string & str) const {return chars_.rfind(str);} / @brief Finds the last substring that is equal to the given character sequence. The search begins atposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position followingpos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed aspos, the whole string will be searched. / @param str The string to search for. / @param pos The position at which to start the search / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal tostr. size_type rfind(const basic_string & str, size_type pos) const {return chars_.rfind(str, pos);} / @brief Finds the last substring that is equal to the given character sequence. The search begins atposand proceeds from right to left (thus, the found substring, if any, cannot begin in a position followingpos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed aspos, the whole string will be searched. / @param str The string to search for. / @param pos The position at which to start the search / @param count The length of substring to search for. / @return Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found. / @remarks Finds the first substring equal to the range [s, s + count). / @remarks This range may contain null characters. If [s,s + count) is not a valid range, the behavior is undefined. size_type rfind(const_pointer s, size_type pos, size_type count) const {return chars_.rfind(s, pos, count);} / @brief Finds the last substring that is equal to the given character sequence. The search begins at xtd::basic_string::npos and proceeds from right to left (thus, the found substring, if any, cannot begin in a position following xtd::basic_string::npos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as xtd::basic_string::npos, the whole string will be searched.

Parameters

s	The pointer to a character string to search for.

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to the character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

rfind() [2/2]

template<class char_t, class traits_t, class allocator_t>

size_type xtd::basic_string< char_t, traits_t, allocator_t >::rfind ( const_pointer s, size_type pos ) const

inline

Finds the last substring that is equal to the given character sequence. The search begins at pos and proceeds from right to left (thus, the found substring, if any, cannot begin in a position following pos). If xtd::basic_string::npos or any value not smaller than xtd::basic_string::size() - 1 is passed as pos, the whole string will be searched.

Parameters

s	The pointer to a character string to search for.
pos	The position at which to start the search

Returns

Position of the first character of the found substring or xtd::basic_string::npos if no such substring is found.

Remarks

Finds the first substring equal to the character string pointed to by s. The length of the string is determined by the first null character using traits_t::length(s).

If [s, s + traits_t::length(s)) is not a valid range, the behavior is undefined.

---

The documentation for this class was generated from the following file:

• xtd.core/include/xtd/basic_string.hpp