std::swap(std::variant)

From cppreference.com
< cpplrm; | utilitylrm; | variant
Defined in header <variant>
template <class... Types>
void swap(variant<Types...>& lhs, variant<Types...>& rhs) noexcept(/* see below */);
(since C++17)

Overloads the std::swap algorithm for std::variant. Effectively calls lhs.swap(rhs).

This overload only participates in overload resolution if is_move_constructible_v<T_i> and is_swappable_v<T_i> are both true for all T_i in Types...

Parameters

lhs, rhs - variant objects whose values to swap

Return value

(none)

Exceptions

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

Example

See also

swaps with another variant
(public member function)