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std:: uses_allocator <std::promise>

From cppreference.net
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std::promise
template < class R, class Alloc >
struct uses_allocator < std:: promise < R > , Alloc > : std:: true_type { } ;
(C++11 起)

为 std::uses_allocator 类型特征提供针对 std::promise 的特化版本。

目录

继承自 std:: integral_constant

成员常量

value
[static]
true
(公开静态成员常量)

成员函数

operator bool
将对象转换为 bool ，返回 value
(公开成员函数)
operator()
(C++14)
返回 value
(公开成员函数)

成员类型

类型 定义
value_type bool
type std:: integral_constant < bool , value >

参见

(C++11)
检查指定类型是否支持使用分配器构造
(类模板)