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std::pair::swap

提供: cppreference.com
< cpp‎ | utility‎ | pair

 
 
 
std::pair
メンバ関数
Original:
Member functions
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pair::pair
pair::operator=
pair::swap
非メンバ関数
Original:
Non-member functions
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make_pair
operator=
operator!=
operator<
operator<=
operator>
operator>=
std::swap
get(C++11)
ヘルパークラス
Original:
Helper classes
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tuple_size(C++11)
tuple_element(C++11)
 
void swap(pair& other);
(C++11およびそれ以降)
firstother.firstsecond持つとスワップother.second.
Original:
Swaps first with other.first and second with other.second.
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目次

[編集] パラメータ

other -
交換する値のペア
Original:
pair of values to swap
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[編集] 値を返します

(なし)
Original:
(none)
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[編集] 例外

noexcept specification:  (C++11およびそれ以降)
noexcept(

     noexcept(std::swap(first, p.first)) &&
     noexcept(std::swap(second, p.second))

)

[編集]

#include <iostream>
#include <utility>
#include <string>
int main()
{
    std::pair<int, std::string> p1, p2;
    p1 = std::make_pair(10, "test");
    p2.swap(p1);
    std::cout << "(" << p2.first << ", " << p2.second << ")\n";
}

出力:

(10, test)

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