xtd::ranges::views::order_by_view Class Reference

Definition

The xtd::ranges::views::order_by_view class is used to sort the elements of a sequence in ascending order according to a key.

Definition

class order_by_view;

Header

#include <xtd/ranges/views/order_by_view>

Namespace

xtd::ranges::views

Library

xtd.core

Examples

The following example shows how to use xtd::ranges::views::order_by instance :

#include <xtd/xtd>
 
auto main() -> int {
  auto numbers = array {2, 7, 3, 1, 4, 10, 5, 6, 8, 9};
  console::write_line("numbers = {}", numbers | order_by([](auto n) {return n;}));
}
 
// This code produces the following output :
//
// numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

The following example shows how to use xtd::ranges::views::order_by_view class :

#include <xtd/xtd>
 
auto main() -> int {
  auto numbers = array {2, 7, 3, 1, 4, 10, 5, 6, 8, 9};
  console::write_line("numbers = {}", order_by(numbers, [](auto n) {return n;}));
}
 
// This code produces the following output :
//
// numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Public Operators
template<std::ranges::range range_t, typename key_selector_t>
auto	operator() (range_t &&source, const key_selector_t &key_selector) const
	Sorts the elements of a sequence in ascending order according to a key.
template<typename key_selector_t>
auto	operator() (const key_selector_t &key_selector) const
	Sorts the elements of a sequence in ascending order according to a key.

Member Function Documentation

operator()() [1/2]

template<std::ranges::range range_t, typename key_selector_t>

auto xtd::ranges::views::order_by_view::operator() ( range_t && source, const key_selector_t & key_selector ) const

inline

Sorts the elements of a sequence in ascending order according to a key.

Template Parameters

range_t

The type of the elements of source.

Parameters

source	A sequence of values to sort.
key_selector	A function to extract a key from an element.

operator()() [2/2]

template<typename key_selector_t>

auto xtd::ranges::views::order_by_view::operator() ( const key_selector_t & key_selector ) const

inline

Sorts the elements of a sequence in ascending order according to a key.

Template Parameters

range_t

The type of the elements of source.

Parameters

key_selector

A function to extract a key from an element.

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

• xtd.core/include/xtd/ranges/views/order_by_view.hpp