Time_point
std::chrono::time_point is a C++ standard library class template representing a point in time relative to a clock's epoch, measured using a duration.
Learn C++ by Example
std::chrono::time_point is a class template representing a point in time relative to a clock's epoch using a duration.
- How it is used
- Uses clock-relative timestamps to build countdowns, compare moments, and convert calendar dates into measurable event times.
- How deep it goes
- Explains template parameters, epochs, clocks, subtraction, conversions, and selected expanded types, while deferring complete chrono internals.
- Examples
- Demonstrates year-end countdowns, parsed event dates, sys_days conversion, duration output, and readable calendar literals.
- What you can do after
- Build countdowns with std::chrono by obtaining clock readings, creating event dates, subtracting time points, and formatting durations.
C++ Concurrency in Action, Second Edition
`std::chrono::time_point` is a C++ standard library class template representing a point in time relative to a clock's epoch.
- How it is used
- Represents clock-relative moments for elapsed-time measurements and absolute timeouts.
- How deep it goes
- Defines clock and duration parameters, epoch-relative values, and arithmetic; notes that epochs cannot be queried or standardized.
- Examples
- Demonstrates timing a function call and waiting on a condition variable until a deadline.
- What you can do after
- Apply `std::chrono` to calculate deadlines and measure elapsed time.
Read how C++ Concurrency in Action, Second Edition explains time_point →
Related concepts
- std::chrono::durationconfigures · std::chrono::duration is a C++ standard library class template representing a time interval with a specified tick period and representation type.
- clockconfigures · A computer clock is a timekeeping source or interface that provides time values or measurements to software.
- epochuses · In machine learning, an epoch is one complete pass through the training data during model training or optimization.
- durationhas part · A duration is an amount or span of time, expressed as an interval or in temporal units.
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