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std::pair::swap

Da cppreference.com.
< cpp‎ | utility‎ | pair

 
 
Utilità libreria
Tipo di supporto (basic types, RTTI, type traits)
Gestione della memoria dinamica
La gestione degli errori
Programma di utilità
Funzioni variadic
Data e ora
Funzione oggetti
initializer_list(C++11)
bitset
hash(C++11)
Gli operatori relazionali
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Coppie e tuple
Original:
Pairs and tuples
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pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Swap, in avanti e spostare
Original:
Swap, forward and move
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swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
std::pair
Membri funzioni
Original:
Member functions
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pair::pair
pair::operator=
pair::swap
Non membri funzioni
Original:
Non-member functions
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make_pair
operator=
operator!=
operator<
operator<=
operator>
operator>=
std::swap
get(C++11)
Helper classi
Original:
Helper classes
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tuple_size(C++11)
tuple_element(C++11)
 
void swap(pair& other);
(dal C++11)
Swap first con other.first e second con other.second.
Original:
Swaps first with other.first and second with other.second.
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Indice

[modifica] Parametri

other -
coppia di valori da scambiare
Original:
pair of values to swap
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[modifica] Valore di ritorno

(Nessuno)
Original:
(none)
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[modifica] Eccezioni

noexcept specification:  (dal C++11)
noexcept(

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

)

[modifica] Esempio

#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";
}

Output:

(10, test)

[modifica] Vedi anche