C++ named requirements: TrivialClock (since C++11)
From cppreference.com
C++
C++ named requirements
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The TrivialClock requirements describe the requirements satisfied by several clocks in the chrono library
Requirements
For a type TC:
- The type must meet Clock requirements.
- The types TC::rep, TC::duration, and TC::time_point satisfy the requirements of EqualityComparable, LessThanComparable , DefaultConstructible, CopyConstructible, CopyAssignable, Destructible (until C++17) , Swappable, and NumericType
- The function TC::now() does not throw exceptions.
- The type TC::time_point::clock meets the TrivialClock
Standard library
The following types in the standard library satisfy TrivialClock requirements:
(C++11)
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wall clock time from the system-wide realtime clock (class) |
(C++11)
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monotonic clock that will never be adjusted (class) |
(C++11)
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the clock with the shortest tick period available (class) |
(C++20)
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Clock used for file time
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(C++17)
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represents file time values (typedef) |