std::swap(std::optional)
From cppreference.com
Defined in header
<optional>
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template< class T >
void swap( optional<T>& lhs, optional<T>& rhs ); |
(since C++17) | |
Overloads the std::swap algorithm for std::optional. Exchanges the state of lhs
with that of rhs
. Effectively calls lhs.swap(rhs).
Contents |
[edit] Parameters
lhs, rhs | - | optional objects whose states to swap
|
[edit] Return value
(none)
[edit] Exceptions
noexcept specification:
noexcept(lhs.swap(rhs))
[edit] Example
This section is incomplete Reason: no example |
[edit] See also
exchanges the contents (public member function) |