template <class Clock, class Duration = typename Clock::duration> class time_point;
| 成員型別 | 定義 | 說明 |
|---|---|---|
| clock | 第一個模板引數 (Clock) | The clock class (either system_clock, steady_clock, high_resolution_clock or a custom clock class). |
| duration | 第二個模板引數 (Duration) | The duration type used to represent the time point. |
| rep | duration::rep | Type returned by duration::count. |
| period | duration::period | The ratio type that represents the length of a period in seconds. |