std::experimental::reflect::ObjectSequence
来自 cppreference.com
< cpp | experimental | reflect
在头文件 <experimental/reflect> 中定义 |
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template< class T > concept ObjectSequence = Object<T> && /* see below */; |
(反射 TS) | |
ObjectSequence
概念由元对象序列类型满足。
元对象序列类型是一种元对象类型,它是从生成序列的元对象操作中获得的,例如 get_data_members
。元对象序列类型的每个元素都是元对象类型。
[编辑] 示例
运行此代码
#include<cmath> #include<experimental/reflect> #include<tuple> #include<type_traits> namespace reflect = std::experimental::reflect; template<reflect::Typed... Ms> using tuple_from_seq_t = std::tuple<reflect::get_reflected_type_t< reflect::get_type_t<Ms>>...>; template<reflect::Record T> using collect_tuple = reflect::unpack_sequence_t< tuple_from_seq_t, reflect::get_data_members_t<T>>; int main() { static_assert(reflect::ObjectSequence< reflect::get_data_members<reflexpr(std::div_t)>>, ""); static_assert(std::is_same<collect_tuple<reflexpr(std::div_t)>, std::tuple<int, int>>::value, ""); }
[编辑] 另请参阅
本节不完整 原因:模板化 |