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std::chrono::system_clock::from_time_t

STD：：时间：：系统[医]时钟：：从[医]时间[医]T型

static std::chrono::system_clock::time_point from_time_t( std::time_t t ​(since C++11)

皈依t使用这两种类型的更粗的精度来设置时间点类型。

如果time_point精度较低，因此实现定义了值是舍入还是截断。

参数

t-std::time_t value to convert

返回值

类型值std::chrono::system_clock::time_point代表t...

例外

noexcept规格：

noexcept

另见

to_time_t staticconverts a system clock time point to std::time_t (public static member function)

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