std::function_ref::operator=

From cppreference.com
< cpp‎ | utility‎ | functional‎ | function ref
C++
Utilities library
General utilities
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)
(C++20)
Swap and type operations
(C++20)
(C++14)
(C++11)
(C++23)
(C++11)
(C++23)
(C++11)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++11)
(C++17)
(C++17)
(C++23)



Function objects
Function invocation
(C++17)(C++23)
Identity function object
(C++20)
Transparent operator wrappers
(C++14)
(C++14)
(C++14)
(C++14)  
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)
(C++14)

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

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