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std::make_from_tuple

STD：使[医]从[医]元组

Defined in header ​​
template <class T, class Tuple> constexpr T make_from_tuple(Tuple&& t​(since C++17)

构造一个类型的对象T，使用元组的元素。t作为构造函数的参数。

参数

t-tuple whose elements to be used as arguments to the constructor of T

返回值

构造T对象。

注记

元组不需要std::tuple，相反，它可能是任何支持std::get和std::tuple_size特别是，std::array和std::pair可能会被使用。

应付保证复制省略，，，T不必移动。

可能的实施

名称空间详细信息{Template<class T，class tuple，std：：size[医]我...我…[医]从[医]元组[医]IMPEL%28元组&&t，STD：：索引[医]序列<i>%29{返回T%28std：：GET<I>28%d：：前进<Tuple>%28t%29%29...%29；}//命名空间详细模板<class T，class tuple>conexpr T make[医]从[医]元组%28元组&&t%29{返回详细信息：：make[医]从[医]元组[医]推动<T>28%d：：前进<Tuple>%28t%29，STD：：make[医]指数[医]序列<std：：tuple[医]大小[医]V<STD：：衰变[医]T型<Tuple>>>{}%29；}

*。

例

另见

make_tuplecreates a tuple object of the type defined by the argument types (function template)
forward_as_tuplecreates a tuple of rvalue references (function template)
apply (C++17)calls a function with a tuple of arguments (function template)

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