xtd::array< type_t, rank_, allocator_t > Class Template Reference

Inheritance diagram for xtd::array< type_t, rank_, allocator_t >:

Definition

template<typename type_t, xtd::size rank_, typename allocator_t>
class xtd::array< type_t, rank_, allocator_t >

Provides methods for creating, manipulating, searching, and sorting arrays, thereby serving as the base class for all arrays.

Definition

template<typename type_t, xtd::size rank_, typename allocator_t>
class array : public xtd::basic_array<type_t, allocator_t>;

Header

#include <xtd/array>

Namespace

xtd

Library

xtd.core

Remarks

The xtd::array class is not part of the xtd::collections namespaces. However, it is still considered a collection because it is based on the xtd::collections::generic::ilist interface.

An element is a value in an xtd::array. The length of an xtd::array is the total number of elements it can contain. The lower bound of an v is the index of its first element. An xtd::array can have any lower bound, but it has a lower bound of zero by default. A different lower bound can be defined when creating an instance of the xtd::array class using xtd::array::create_instance. A multidimensional xtd::array can have different bounds for each dimension. An array can have a maximum of 32 dimensions.

Unlike the classes in the xtd::collections namespaces, xtd::array has a fixed capacity. To increase the capacity, you must create a new xtd::array object with the required capacity, copy the elements from the old xtd::array object to the new one, and delete the old xtd::array.

The xtd::array class implements the xtd::collections::generic::ilist, xtd::collections::generic::icollection, and xtd::collections::generic::ienumerable generic interfaces. The implementations are provided to arrays at run time, and as a result, the generic interfaces do not appear in the declaration syntax for the xtd::array class. In addition, there are no reference topics for interface members that are accessible only by casting an array to the generic interface type (explicit interface implementations). The key thing to be aware of when you cast an array to one of these interfaces is that members which add, insert, or remove elements throw xtd::not_supported_exception.

The xtd::array::copy method copies elements not only between arrays of the same type but also between standard arrays of different types; it handles type casting automatically.

Some methods, such as xtd::array::create_instance, xtd::array::copy, xtd::array::copy_to, xtd::array::get_value, and xtd::array::set_value, provide overloads that accept 64-bit integers as parameters to accommodate large capacity arrays. xtd::array::long_length and xtd::array::get_long_length return 64-bit integers indicating the length of the array.

The xtd::array is not guaranteed to be sorted. You must sort the xtd::array prior to performing operations (such as xtd::array::binary_search) that require the xtd::array to be sorted.

Examples

The following code example demonstrates different methods to create an array.

Examples

The following code example creates and initializes an Array and displays its properties and its elements.

Examples

generic_icollection.cpp, generic_ilist.cpp, generic_list3.cpp, ienumerable.cpp, ilist.cpp, and read_only_collection.cpp.

Public Constructors
	array ()=default
	Initializes a new instance of the array class that is empty.
	array (const array< xtd::size, 1 > &lengths)
	Initializes a new instance of the array class with lengths for each rank specified.

Public Properties
xtd::size	rank () const noexcept override
	Gets the rank (number of dimensions) of the array.

Public Operators
array &	operator= (const array &)=default
array &	operator= (array &&)=default

Additional Inherited Members
Public Types inherited from xtd::basic_array< type_t, allocator_t >
using	value_type = type_t
	Represents the array value type.
using	allocator_type = xtd::collections::generic::helpers::allocator< typename std::conditional< std::is_same< bool, value_type >::value, xtd::byte, value_type >::type >
	Represents the array allocator type.
using	base_type = std::vector< typename std::conditional< std::is_same< bool, value_type >::value, xtd::byte, value_type >::type, allocator_type >
	Represents the array base type.
using	size_type = xtd::size
	Represents the array size type (usually xtd::size).
using	difference_type = xtd::ptrdiff
	Represents the array difference type (usually xtd::ptrdiff).
using	reference = value_type &
	Represents the reference of array value type.
using	const_reference = const value_type &
	Represents the const reference of array value type.
using	pointer = value_type *
	Represents the pointer of array value type.
using	const_pointer = const value_type *
	Represents the const pointer of array value type.
using	iterator = typename xtd::collections::generic::ilist< type_t >::iterator
	Represents the iterator of array value type.
using	const_iterator = typename xtd::collections::generic::ilist< type_t >::const_iterator
	Represents the const iterator of array value type.
using	reverse_iterator = typename base_type::reverse_iterator
	Represents the reverse iterator of array value type.
using	const_reverse_iterator = typename base_type::const_reverse_iterator
	Represents the const reverse iterator of array value type.
Public Types inherited from xtd::collections::generic::ilist< type_t >
using	iterator = typename icollection< type_t >::iterator
	Represents the iterator of xtd::collections::generic::ienumerable value type.
using	const_iterator = typename icollection< type_t >::const_iterator
	Represents the const iterator of xtd::collections::generic::ienumerable value type.
Public Types inherited from xtd::collections::generic::icollection< type_t >
using	iterator = typename ienumerable< type_t >::iterator
	Represents the iterator of xtd::collections::generic::ienumerable value type.
using	const_iterator = typename ienumerable< type_t >::const_iterator
	Represents the const iterator of xtd::collections::generic::ienumerable value type.
Public Types inherited from xtd::collections::generic::ienumerable< type_t >
using	iterator = typename enumerable_iterators< type_t, ienumerable< type_t > >::iterator
	Represents the iterator of xtd::collections::generic::ienumerable value type.
using	const_iterator = typename enumerable_iterators< type_t, ienumerable< type_t > >::const_iterator
	Represents the const iterator of xtd::collections::generic::ienumerable value type.
Public Types inherited from xtd::collections::generic::enumerable_iterators< type_t, ienumerable< type_t > >
using	const_iterator = const iterator
	Represents the const iterator of enumarable value type.
Static Public Attributes inherited from xtd::basic_array< type_t, allocator_t >
static constexpr size_type	npos
	This is a special value equal to the maximum value representable by the type xtd::size.
Static Public Attributes inherited from xtd::collections::generic::ilist< type_t >
static constexpr xtd::size	npos
	This is a special value equal to the maximum value representable by the type xtd::size.
Public Member Functions inherited from xtd::basic_array< type_t, allocator_t >
virtual reference	back ()
	Returns a reference to the last element in the container.
virtual const_reference	back () const
	Returns a reference to the last element in the container.
const_iterator	begin () const noexcept override
	Returns an iterator to the first element of the enumarable.
iterator	begin () noexcept override
	Returns an iterator to the first element of the enumarable.
const_iterator	cbegin () const noexcept override
	Returns an iterator to the first element of the enumarable.
const_iterator	cend () const noexcept override
	Returns an iterator to the element following the last element of the enumarable.
size_type	count () const noexcept override
	Gets the number of elements contained in the xtd::array <type_t>.
virtual const_reverse_iterator	crbegin () const noexcept
	Returns a reverse iterator to the first element of the reversed vector. It corresponds to the last element of the non-reversed vector. If the vector is empty, the returned iterator is equal to xtd::array::rend().
virtual const_reverse_iterator	crend () const noexcept
	Returns a reverse iterator to the element following the last element of the reversed vector. It corresponds to the element preceding the first element of the non-reversed vector. This element acts as a placeholder, attempting to access it results in undefined behavior.
virtual pointer	data () noexcept
	Returns pointer to the underlying array serving as element storage.
virtual const_pointer	data () const noexcept
	Returns pointer to the underlying array serving as element storage.
virtual bool	empty () const noexcept
	Checks if the container has no elements, i.e. whether xtd::array::begin() == xtd::array::end().
const_iterator	end () const noexcept override
	Returns an iterator to the element following the last element of the enumarable.
iterator	end () noexcept override
	Returns an iterator to the element following the last element of the enumarable.
virtual reference	front ()
	Returns a reference to the first element in the container.
virtual const_reference	front () const
	Returns a reference to the first element in the container.
bool	is_fixed_size () const noexcept override
	Gets a value indicating whether the xtd::collections::generic::ilist <type_t> has a fixed size.
bool	is_read_only () const noexcept override
	Gets a value indicating whether the xtd::collections::generic::icollection <type_t> is read-only.
bool	is_synchronized () const noexcept override
	Gets a value indicating whether access to the xtd::collections::generic::icollection <type_t> is synchronized (thread safe).
virtual const base_type &	items () const noexcept
	Returns the underlying base type items.
virtual base_type &	items () noexcept
	Returns the underlying base type items.
virtual size_type	length () const noexcept
	Gets a size that represents the total number of elements in all the dimensions of the array.
virtual xtd::int64	long_length ()
	Gets a 64-bit integer that represents the total number of elements in all the dimensions of the array.
virtual size_type	max_size () const noexcept
	Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(xtd::array::begin(), xtd::array::end()) for the largest container.
virtual reverse_iterator	rbegin () noexcept
	Returns a reverse iterator to the first element of the reversed vector. It corresponds to the last element of the non-reversed vector. If the vector is empty, the returned iterator is equal to xtd::array::rend().
virtual const_reverse_iterator	rbegin () const noexcept
	Returns a reverse iterator to the first element of the reversed vector. It corresponds to the last element of the non-reversed vector. If the vector is empty, the returned iterator is equal to xtd::array::rend().
virtual reverse_iterator	rend () noexcept
	Returns a reverse iterator to the element following the last element of the reversed vector. It corresponds to the element preceding the first element of the non-reversed vector. This element acts as a placeholder, attempting to access it results in undefined behavior.
virtual const_reverse_iterator	rend () const noexcept
	Returns a reverse iterator to the element following the last element of the reversed vector. It corresponds to the element preceding the first element of the non-reversed vector. This element acts as a placeholder, attempting to access it results in undefined behavior.
virtual size_type	size () const noexcept
	Returns the number of elements in the container, i.e. std::distance(xtd::array::begin(), xtd::array::end()).
const xtd::object &	sync_root () const noexcept override
	Gets an object that can be used to synchronize access to the the xtd::collections::generic::icollection <type_t>.
virtual reference	at (size_type index)
	Returns a reference to the element at specified location pos, with bounds checking.
virtual const_reference	at (size_type index) const
	Returns a reference to the element at specified location pos, with bounds checking.
constexpr bool	contains (const type_t &value) const noexcept override
	Determines whether an element is in the array.
void	copy_to (xtd::array< type_t > &array, size_type index) const override
	Copies the elements of the xtd::collections::generic::icollection <type_t> to an xtd::array, starting at a particular xtd::array index.
void	copy_to (xtd::array< type_t > &array, xtd::int64 index) const
	Copies all the elements of the current one-dimensional array to the specified one-dimensional array starting at the specified destination array index. The index is specified as a 64-bit integer.
bool	equals (const object &obj) const noexcept override
	Determines whether the specified object is equal to the current object.
bool	equals (const basic_array &rhs) const noexcept override
virtual void	fill (const value_type &value) noexcept
	Assigns the value to all elements in the container.
xtd::collections::generic::enumerator< value_type >	get_enumerator () const noexcept override
	Returns an enumerator that iterates through a collection.
constexpr size_type	get_length (size_type dimension) const
	Gets the total number of elements in all the dimensions of the array.
constexpr xtd::int64	get_long_length (size_type dimension) const
	Gets a 64-bit integer that represents the total number of elements in all the dimensions of the array.
constexpr size_type	get_lower_bound (size_type dimension) const
	Gets the lower bound of the specified dimension in the array.
constexpr size_type	get_upper_bound (size_type dimension) const
	Gets the upper bound of the specified dimension in the array.
const value_type &	get_value (const xtd::array< size_type > &indexes) const
	Gets the value at the specified position in the multidimensional array. The indexes are specified as 32-bit integers array.
size_type	index_of (const type_t &value) const noexcept override
	Determines the index of a specific item in the xtd::array <type_t>.
void	resize (size_type new_size)
	Resizes the container to contain count elements, does nothing if count == size(). @param new_size The new size of the container. @exception xtd::argument_out_of_range_exception Ifnew_sizeis outside greather than xtd::array::max_size. @remarks If the current size is greater thancount, the container is reduced to its firstcountelements. @remarks If the current size is less thancount`, additional default-inserted elements are appended.
void	resize (size_type new_size, value_type value)
	Resizes the container to contain count elements, does nothing if count == size(). @param new_size The new size of the container. @param value The value to initialize the new elements with. @exception xtd::argument_out_of_range_exception Ifnew_sizeis outside greather than xtd::array::max_size. @remarks If the current size is greater thancount, the container is reduced to its firstcountelements. @remarks If the current size is less thancount`, additional default-inserted elements are appended.
void	set_value (const type_t &value, const xtd::array< size_type > &indexes)
	Sets a value to the element at the specified position in the multidimensional array.
virtual void	swap (basic_array &other) noexcept
	Exchanges the contents and capacity of the container with those of other. Does not invoke any move, copy, or swap operations on individual elements.
xtd::string	to_string () const noexcept override
	Returns a xtd::string that represents the current object.
basic_array &	operator= (const basic_array &other)
	Copy assignment operator. Replaces the contents with a copy of the contents of other.
basic_array &	operator= (basic_array &&other) noexcept=default
	Move assignment operator. Replaces the contents with those of other using move semantics (i.e. the data in other is moved from other into this container). other is in a valid but unspecified state afterwards.
basic_array &	operator= (std::initializer_list< type_t > &items)
	Replaces the contents with those identified by initializer list ilist.
const_reference	operator[] (size_type index) const override
	Returns a reference to the element at specified location index.
reference	operator[] (size_type index) override
	Returns a reference to the element at specified location index.
	operator const base_type & () const noexcept
	Returns a reference to the underlying base type.
	operator base_type & () noexcept
	Returns a reference to the underlying base type.
type_t &	operator() (const xtd::array< size_type > &indexes)
	Gets the value at the specified position in the multidimensional array. The indexes are specified as a 32-bit integer array.
const type_t &	operator() (const xtd::array< size_type > &indexes) const
	Gets the value at the specified position in the multidimensional array. The indexes are specified as a 32-bit integer array.
Public Member Functions inherited from xtd::object
	object ()=default
	Create a new instance of the ultimate base class object.
virtual size_t	get_hash_code () const noexcept
	Serves as a hash function for a particular type.
virtual type_object	get_type () const noexcept
	Gets the type of the current instance.
template<typename object_t >
xtd::uptr< object_t >	memberwise_clone () const
	Creates a shallow copy of the current object.
Public Member Functions inherited from xtd::collections::generic::ilist< type_t >
Public Member Functions inherited from xtd::collections::generic::icollection< type_t >
Public Member Functions inherited from xtd::collections::generic::ienumerable< type_t >
Public Member Functions inherited from xtd::collections::generic::enumerable_iterators< type_t, ienumerable< type_t > >
Public Member Functions inherited from xtd::iequatable< basic_array< type_t, allocator_t > >
Static Public Member Functions inherited from xtd::basic_array< type_t, allocator_t >
static size_type	index_of (const basic_array &array, const value_type &value) noexcept
	Determines the index of a specific item in the array specified.
static size_type	index_of (const basic_array &array, const value_type &value, size_type index)
	Determines the index of a specific item in the array specified.
static size_type	index_of (const basic_array &array, const value_type &value, size_type index, size_type count)
	Determines the index of a specific item in the array specified.
static void	reverse (basic_array &array) noexcept
	Reverses the order of the elements in the entire xtd::basic_array.
static void	reverse (basic_array &array, size_type index, size_type count)
	Reverses the order of the elements in the specified range.
Static Public Member Functions inherited from xtd::object
template<typename object_a_t , typename 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<typename object_a_t , typename 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.
Protected Member Functions inherited from xtd::abstract_object
	abstract_object ()=default
	Initializes a new instance of the xtd::abstract_object class.

Constructor & Destructor Documentation

array() [1/2]

template<typename type_t , xtd::size rank_, typename allocator_t >

xtd::array< type_t, rank_, allocator_t >::array ( )

default

Initializes a new instance of the array class that is empty.

Remarks

The array class is not thread safe.

Examples

The following code example demonstrates different methods to create an array.

array() [2/2]

template<typename type_t , xtd::size rank_, typename allocator_t >

xtd::array< type_t, rank_, allocator_t >::array ( const array< xtd::size, 1 > &  lengths )

inline

Initializes a new instance of the array class with lengths for each rank specified.

Parameters

lengths

the lengths for each rank.

Remarks

The array class is not thread safe.

Examples

The following code example demonstrates different methods to create an array.

Member Function Documentation

rank()

template<typename type_t , xtd::size rank_, typename allocator_t >

xtd::size xtd::array< type_t, rank_, allocator_t >::rank ( ) const

inlineoverridevirtualnoexcept

Gets the rank (number of dimensions) of the array.

Returns

The rank (number of dimensions) of the array.

Examples

The following code example demonstrates methods to get the rank of an array.

Reimplemented from xtd::basic_array< type_t, allocator_t >.

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

• xtd.core/include/xtd/array.hpp