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std::reference_wrapper::reference_wrapper

STD：：参考资料[医]包装：：参考[医]包装器

reference_wrapper( T& x ​(since C++11)
reference_wrapper( T&& x ) = delete;​(since C++11)
reference_wrapper( const reference_wrapper<T>& other ​(since C++11)

构造一个新的引用包装器。

1%29商店引用x...

2%29从临时对象建造是不允许的。

3%29复制构造函数。存储引用other.get()...

参数

x-an object to wrap
other-another reference wrapper

例外

noexcept规格：

noexcept

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