std::swap(std::experimental::optional)

 

C++

Language

Standard library headers

Concepts

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

 

Experimental libraries

Experimental standard libraries

optional (library fundamentals TS)

any (library fundamentals TS)

basic_string_view (library fundamentals TS)

Polymorphic allocator library (library fundamentals TS)

Filesystem library (filesystem TS)

 

std::experimental::optional

Member functions

optional::optional

optional::~optional

optional::operator=

Observers

optional::operator->optional::operator*

optional::operator bool

optional::value

optional::value_or

Modifiers

optional::emplace

optional::swap

Non-member functions

operator==operator<

make_optional

swap

Helper classes

hash

 

Defined in header <experimental/optional>
template< class T > void swap( optional<T>& lhs, optional<T>& rhs );		(library fundamentals TS)

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

Parameters

lhs, rhs

-

optional objects whose states to swap

Return value

(none)

Exceptions

noexcept specification:  

noexcept(lhs.swap(rhs))

See also

swap	exchanges the contents (public member function)