std::function_ref:: operator=

From cppreference.com
C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Function objects
Function invocation
(C++17) (C++23)
Identity function object
(C++20)
Old binders and adaptors
( until C++17* )
( until C++17* )
( until C++17* )
( until C++17* )
( until C++17* )
( until C++17* )
( until C++17* ) ( until C++17* ) ( until C++17* ) ( until C++17* )
( until C++20* )
( until C++20* )
( until C++17* ) ( until C++17* )
( until C++17* ) ( until C++17* )

( until C++17* )
( until C++17* ) ( until C++17* ) ( until C++17* ) ( until C++17* )
( until C++20* )
( until C++20* )
std::function_ref
constexpr function_ref & operator = ( const function_ref & ) noexcept = default ;
(1) (since C++26)
template < class T >
constexpr function_ref & operator = ( T ) = delete ;
(2) (since C++26)
1) Copy assignment operator is explicitly-defaulted. std::function_ref satisfies copyable and TriviallyCopyable . This defaulted assignment operator performs a shallow copy of the stored thunk-ptr and bound-entity .
2) User-defined assignment operator is explicitly-deleted if T is not the same type as std::function_ref , std:: is_pointer_v < T > is false , and T is not a specialization of std::nontype_t . This overload participates in overload resolution only if the constraints are satisfied in the conditions above.

Return value

* this

See also

constructs a new function_ref object
(public member function)
replaces or destroys the target
(public member function of std::copyable_function )
assigns a new target
(public member function of std::function<R(Args...)> )
replaces or destroys the target
(public member function of std::move_only_function )
Retrieved from " https://en.cppreference.com/mwiki/index.php?title=cpp/utility/functional/function_ref/operator%3D&oldid=178009 "