xtd 0.2.0
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◆ to_array()

template<typename type_t , typename allocator_t = xtd::collections::generic::helpers::allocator<typename std::conditional<std::is_same<bool, type_t>::value, char, type_t>::type>>
virtual xtd::array< value_type > xtd::collections::generic::list< type_t, allocator_t >::to_array ( ) const
inlinevirtualnoexcept

Copies the elements of the xtd::collections::generic::list <type_t> to a new array.

Returns
An array containing copies of the elements of the xtd::collections::generic::list <type_t>.
Remarks
The elements are copied using xtd::array::copy, which is an O(n) operation, where n is xtd::collections::generic::list::count.
This method is an O(n) operation, where n is xtd::collections::generic::list::count.
Examples
The following code example demonstrates the xtd::collections::generic::list <type_t> constructor and various methods of the xtd::collections::generic::list <type_t> class that act on ranges. An array of strings is created and passed to the constructor, populating the list with the elements of the array. The xtd::collections::generic::list::capacity property is then displayed, to show that the initial capacity is exactly what is required to hold the input elements.
#include <xtd/xtd>
using namespace xtd;
using namespace xtd::collections::generic;
class example {
public:
static auto main() -> void {
auto input = array<string> {"Brachiosaurus", "Amargasaurus", "Mamenchisaurus"};
auto dinosaurs = list<string>(input);
console::write_line("\ncapacity: {0}", dinosaurs.capacity());
console::write_line();
for (auto dinosaur : dinosaurs)
console::write_line(dinosaur);
console::write_line("\nadd_range(dinosaurs)");
dinosaurs.add_range(dinosaurs);
console::write_line();
for(auto dinosaur : dinosaurs)
console::write_line(dinosaur);
console::write_line("\nremove_range(2, 2)");
dinosaurs.remove_range(2, 2);
console::write_line();
for(auto dinosaur : dinosaurs)
console::write_line(dinosaur);
input = {"Tyrannosaurus", "Deinonychus", "Velociraptor"};
console::write_line("\ninsert_range(3, input)");
dinosaurs.insert_range(3, input);
console::write_line();
for(auto dinosaur : dinosaurs)
console::write_line(dinosaur);
console::write_line("\noutput = dinosaurs.get_range(2, 3).to_array()");
auto output = dinosaurs.get_range(2, 3).to_array();
console::write_line();
for (auto dinosaur : output)
console::write_line(dinosaur);
}
};
startup_(example::main);
// This code produces the following output :
//
//
// capacity: 3
//
// Brachiosaurus
// Amargasaurus
// Mamenchisaurus
//
// add_range(dinosaurs)
//
// Brachiosaurus
// Amargasaurus
// Mamenchisaurus
// Brachiosaurus
// Amargasaurus
// Mamenchisaurus
//
// remove_range(2, 2)
//
// Brachiosaurus
// Amargasaurus
// Amargasaurus
// Mamenchisaurus
//
// insert_range(3, input)
//
// Brachiosaurus
// Amargasaurus
// Amargasaurus
// Tyrannosaurus
// Deinonychus
// Velociraptor
// Mamenchisaurus
//
// output = dinosaurs.get_range(2, 3).to_array()
//
// Amargasaurus
// Tyrannosaurus
// Deinonychus
Represents a strongly typed list of objects that can be accessed by index. Provides methods to search...
Definition list.h:72
Represents the standard input, output, and error streams for console applications.
Definition console.h:36
#define startup_(main_method)
Defines the entry point to be called when the application loads. Generally this is set either to the ...
Definition startup.h:175
The xtd::collections::generic namespace contains interfaces and classes that define generic collectio...
Definition comparer.h:15
std::vector< type_t > array
Definition __array_definition.h:18
The xtd namespace contains all fundamental classes to access Hardware, Os, System,...
Definition xtd_about_box.h:10