std::uses_allocator<std::function>

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(until C++17*)
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(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
Defined in header <functional>
template < class R, class... ArgTypes, class Alloc >
struct uses_allocator< std::function <R(ArgTypes...) >, Alloc> : std::true_type { } ;
(since C++11)
(until C++17)

This specialization of std::uses_allocator informs other library components that all objects of type std::function support uses-allocator construction, even though they do not have a nested allocator_type

Notes

std::function std::function

Inherited from std::integral_constant

Member constants

value
[static]
 true
(public static member constant)

Member functions

operator bool
 converts the object to bool, returns value
(public member function)
operator()
(C++14)
 returns value
(public member function)

Member types

Type Definition
value_type bool
type std::integral_constant < bool, value>

See also

(C++11)
 checks if the specified type supports uses-allocator construction
(class template)
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