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 requirements, recursively.
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
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(C++11)
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the clock with the shortest tick period available
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(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) |
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