Std::chrono::duration
std::chrono::duration is a C++ standard library class template representing a time interval with a specified tick period and representation type.
Learn C++ by Example
std::chrono::milliseconds is a C++ chrono duration type whose period is one millisecond.
- How it is used
- Represents and converts fine-grained time intervals in chrono-based countdowns and duration calculations.
- How deep it goes
- Explains the millisecond period and conversion direction, then stops short of defining the duration type internally.
- Examples
- Uses a two-hour assignment to milliseconds and a reverse conversion with duration_cast.
- What you can do after
- Apply it via the C++ chrono library to represent milliseconds and select explicit casts when conversions may lose precision.
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C++ Concurrency in Action, Second Edition
`std::chrono::milliseconds` is a C++ standard library duration type representing milliseconds.
- How it is used
- Represents lengths of time and supplies duration arguments for timed waits and lock attempts.
- How deep it goes
- Defines representation and units through a two-parameter template, then demonstrates aliases, literals, and casting without detailing time points.
- Examples
- Uses chrono literals for day, minute, and millisecond values, a millisecond-to-second cast, and a future timeout.
- What you can do after
- Apply durations by constructing values, converting units, and supplying timeouts to timed operations.
Read how C++ Concurrency in Action, Second Edition explains std::chrono::duration →
Related concepts
- time_pointconfigured by · 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.
- duration_castused by · duration_cast is a C++ standard library function template that explicitly converts a duration from one duration type to another.
- durationkind of · A duration is an amount or span of time, expressed as an interval or in temporal units.
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