std::function<R(Args...)>::assign

From cppreference.com
< cpp‎ | utility‎ | functional‎ | function
 
 
Utilities library
General utilities
Date and time
Function objects
Formatting library (C++20)
(C++11)
Relational operators (deprecated in C++20)
Integer comparison functions
(C++20)(C++20)(C++20)   
(C++20)
Swap and type operations
(C++14)
(C++11)
(C++11)
(C++11)
(C++17)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++11)
(C++17)
(C++23)
Elementary string conversions
(C++17)
(C++17)
 
Function objects
Function wrappers
(C++11)
(C++11)
Partial function application
(C++20)(C++23)
(C++11)
Function invocation
(C++17)(C++23)
Identity function object
(C++20)
Reference wrappers
(C++11)(C++11)
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)
Negators
(C++17)
Searchers
Constrained comparators
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++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)
 
 
template< class F, class Alloc >
void assign( F&& f, const Alloc& alloc );
(since C++11)
(removed in C++17)

Initializes the target with f. The alloc is used to allocate memory for any internal data structures that the function might use.

Equivalent to function(std::allocator_arg, alloc, std::forward<F>(f)).swap(*this);.

Parameters

f - callable function to initialize the target with
alloc - allocator to use to allocate memory for the internal data structures

Return value

(none)

Exceptions

May throw implementation-defined exceptions.

See also

assigns a new target
(public member function)