[go: up one dir, main page]

Trait time::ext::NumericalStdDuration[−][src]

pub trait NumericalStdDuration {
    fn std_nanoseconds(self) -> StdDuration;

    fn std_microseconds(self) -> StdDuration;

    fn std_milliseconds(self) -> StdDuration;

    fn std_seconds(self) -> StdDuration;

    fn std_minutes(self) -> StdDuration;

    fn std_hours(self) -> StdDuration;

    fn std_days(self) -> StdDuration;

    fn std_weeks(self) -> StdDuration;
}
Expand description

Create std::time::Durations from primitive and core numeric types.

This trait can be imported (alongside others) with use time::prelude::*.

Due to limitations in rustc, these methods are currently not const fn. See RFC 2632 for details.

Examples

Basic construction of std::time::Durations.

assert_eq!(5.std_nanoseconds(), Duration::from_nanos(5));
assert_eq!(5.std_microseconds(), Duration::from_micros(5));
assert_eq!(5.std_milliseconds(), Duration::from_millis(5));
assert_eq!(5.std_seconds(), Duration::from_secs(5));
assert_eq!(5.std_minutes(), Duration::from_secs(5 * 60));
assert_eq!(5.std_hours(), Duration::from_secs(5 * 3_600));
assert_eq!(5.std_days(), Duration::from_secs(5 * 86_400));
assert_eq!(5.std_weeks(), Duration::from_secs(5 * 604_800));

Just like any other std::time::Duration, they can be added, subtracted, etc.

assert_eq!(
    2.std_seconds() + 500.std_milliseconds(),
    2_500.std_milliseconds()
);
assert_eq!(
    2.std_seconds() - 500.std_milliseconds(),
    1_500.std_milliseconds()
);

When called on floating point values, any remainder of the floating point value will be truncated. Keep in mind that floating point numbers are inherently imprecise and have limited capacity.

Required methods

Create a std::time::Duration from the number of nanoseconds.

Create a std::time::Duration from the number of microseconds.

Create a std::time::Duration from the number of milliseconds.

Create a std::time::Duration from the number of seconds.

Create a std::time::Duration from the number of minutes.

Create a std::time::Duration from the number of hours.

Create a std::time::Duration from the number of days.

Create a std::time::Duration from the number of weeks.

Implementations on Foreign Types

Implement on i32 because that’s the default type for integers. This performs a runtime check and panics if the value is negative.

Implement on f64 because that’s the default type for floats. This performs a runtime check and panics if the value is negative.

Implementors