std::swap(std::basic_string)

From cppreference.com
< cpplrm; | stringlrm; | basic string
std::basic_string
template< class CharT, class Traits, class Alloc >

void swap( std::basic_string<CharT, Traits, Alloc> &lhs,

std::basic_string<CharT, Traits, Alloc> &rhs );
(until C++17)
template< class CharT, class Traits, class Alloc >

void swap( std::basic_string<CharT, Traits, Alloc> &lhs,

std::basic_string<CharT, Traits, Alloc> &rhs ) noexcept(/* see below */);
(since C++17)

Specializes the std::swap algorithm for std::basic_string. Swaps the contents of lhs and rhs. Equivalent to lhs.swap(rhs).

Parameters

lhs, rhs - strings whose contents to swap

Return value

(none)

Complexity

Constant.

Exceptions

noexcept specification:
noexcept(noexcept(lhs.swap(rhs)))
(since C++17)

See also

swaps the contents
(public member function)