Namespaces
Variants
Views
Actions

std::swap(std::optional)

From cppreference.com
< cpp‎ | experimental‎ | optional
Revision as of 16:54, 1 July 2013 by P12bot (Talk | contribs)

Template:cpp/utility/optional/navbar

Defined in header <optional>
template< class T >
void swap( optional<T>& lhs, optional<T>& rhs );
(since C++14)

Overloads the std::swap algorithm for std::optional. Exchanges the state of lhs with that of rhs. Effectively calls lhs.swap(rhs).

Contents

Parameters

lhs, rhs - optional objects whose states to swap

Return value

(none)

Exceptions

noexcept specification:  
noexcept(lhs.swap(rhs))

Example

See also

Template:cpp/utility/optional/dsc swap