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std::swap(std::variant)

From cppreference.com
< cpp‎ | utility‎ | variant
 
 
 
 
Defined in header <variant>
template <class... Types>
void swap(variant<Types...>& lhs, variant<Types...>& rhs)
(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...

Contents

[edit] Parameters

lhs, rhs - variant objects whose values to swap

[edit] Return value

(none)

[edit] Exceptions

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

[edit] Example

[edit] See also

swaps with another variant
(public member function) [edit]