std::experimental::reflect:: get_source_column

From cppreference.net

定义于头文件 `<experimental/reflect>`
template < Object T > struct get_source_column ;		(reflection TS)

提供成员常量 value ，其值等于实现定义的数值，表示由 T 反射的实体或 typedef 名称声明所在行起始位置的某些偏移量。

继承自 std:: integral_constant

value

[static]

表示从实体或由

反射的typedef-name声明行起始位置的实现定义偏移量
(公开静态成员常量)

operator std::uint_least32_t	转换为 std:: uint_least32_t ，返回 value (公开成员函数)
operator() (C++14)	返回 value (公开成员函数)

类型	定义
`value_type`	std:: uint_least32_t
`type`	std:: integral_constant < std:: uint_least32_t , value >

本节内容不完整
原因：缺少示例

返回此对象所表示的列号
(


           std::source_location

的公开成员函数)

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template < class T > constexpr auto get_source_column_v = get_source_column < T > :: value ;		(反射TS)