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std::basic_string::swap

From cppreference.com
< cpp‎ | string‎ | basic string
 
 
 
std::basic_string
 
void swap( basic_string& other );

Exchanges the contents of the string with those of other. All iterators and references remain valid.

Contents

[edit] Parameters

other - string to exchange the contents with

[edit] Return value

(none)

[edit] Example

#include <string>
#include <iostream>
 
int main() 
{
    std::string a = "AAA";
    std::string b = "BBB";
 
    std::cout << "before swap" << '\n';
    std::cout << "a: " << a << '\n';
    std::cout << "b: " << b << '\n';
 
    a.swap(b);
 
    std::cout << "after swap" << '\n';
    std::cout << "a: " << a << '\n';
    std::cout << "b: " << b << '\n';
}

Output:

before swap
a: AAA
b: BBB
after swap
a: BBB
b: AAA

[edit] Complexity

Constant.