std::uses_allocator<std::queue>

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std::queue

Member functions
queue::queue
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queue::operator=
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queue::front
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queue::empty
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queue::push
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swap(std::queue) (C++11)
operator==operator!=operator<operator>operator<=operator>=operator<=> (C++20)
Helper classes
uses_allocator<std::queue> (C++11)
formatter<std::queue> (C++23)
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Defined in header`<queue>`
template<class T,class Container,class Alloc> struct uses_allocator<std::queue<T, Container>, Alloc> :std::uses_allocator<Container, Alloc>::type{};		(since C++11)

Provides a transparent specialization of thestd::uses_allocator type trait forstd::queue: the container adaptor uses allocator if and only if the underlying container does.

1Inherited fromstd::integral_constant

Inherited fromstd::integral_constant

Member constants

value

[static]

true
(public static member constant)

Member functions

operator bool	converts the object tobool, returnsvalue (public member function)
operator() (C++14)	returnsvalue (public member function)

Member types

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

[edit]Example

Run this code

#include <memory>#include <queue> static_assert(std::uses_allocator<std::queue<int>,void>::value==false&&std::uses_allocator<std::queue<int>,std::allocator<int>>::value==true); int main(){}