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std::less
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std::literals::chrono_literals::operator""h
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std::literals::chrono_literals::operator""ms
std::literals::chrono_literals::operator""ns
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std::literals::chrono_literals::operator""us
std::localtime
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std::any

性病：任何

Defined in header ​​
class any;​(since C++17)

全班any描述任何类型的单个值的类型安全容器。

1%29类对象any存储满足构造函数要求或为空的任何类型的实例，这称为国家全班any对象。存储的实例称为包含的对象。如果两种状态都是空的，或者两者都是空的，如果包含的对象是等效的，则它们是等效的。

2%29非会员any_cast函数提供对所包含对象的类型安全访问。

我们鼓励实现避免对小对象进行动态分配，但是这样的优化可能只适用于以下类型：std::is_nothrow_move_constructible回报true...

成员函数

(constructor)constructs an any object (public member function)
operator=assigns an any object (public member function)
(destructor)destroys an any object (public member function)

修饰语者

修改包含的对象，直接构造新对象%28公共成员函数%29

重置销毁包含的对象%28公共成员函数%29

交换交换2任何对象%28公共成员函数%29

观察员

有[医]值检查对象是否持有值%28公共成员函数%29

类型返回包含的值%28公共成员函数%29的类型

非会员职能

std::swap(std::any) (C++17)specializes the std::swap algorithm (function)
any_cast (C++17)type-safe access to the contained object (function template)
make_any (C++17)creates an any object (function template)

帮助者类

bad_any_cast (C++17)exception thrown by the value-returning forms of any_cast on a type mismatch (class)

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