Struct composition::START_TIME [−][src]
Methods from Deref<Target = Instant>
pub fn duration_since(&self, earlier: Instant) -> Duration
1.8.0[src]
Returns the amount of time elapsed from another instant to this one.
Panics
This function will panic if earlier
is later than self
.
Examples
use std::time::{Duration, Instant}; use std::thread::sleep; let now = Instant::now(); sleep(Duration::new(1, 0)); let new_now = Instant::now(); println!("{:?}", new_now.duration_since(now));
pub fn checked_duration_since(&self, earlier: Instant) -> Option<Duration>
1.39.0[src]
Returns the amount of time elapsed from another instant to this one, or None if that instant is later than this one.
Examples
use std::time::{Duration, Instant}; use std::thread::sleep; let now = Instant::now(); sleep(Duration::new(1, 0)); let new_now = Instant::now(); println!("{:?}", new_now.checked_duration_since(now)); println!("{:?}", now.checked_duration_since(new_now)); // None
pub fn saturating_duration_since(&self, earlier: Instant) -> Duration
1.39.0[src]
Returns the amount of time elapsed from another instant to this one, or zero duration if that instant is later than this one.
Examples
use std::time::{Duration, Instant}; use std::thread::sleep; let now = Instant::now(); sleep(Duration::new(1, 0)); let new_now = Instant::now(); println!("{:?}", new_now.saturating_duration_since(now)); println!("{:?}", now.saturating_duration_since(new_now)); // 0ns
pub fn elapsed(&self) -> Duration
1.8.0[src]
Returns the amount of time elapsed since this instant was created.
Panics
This function may panic if the current time is earlier than this
instant, which is something that can happen if an Instant
is
produced synthetically.
Examples
use std::thread::sleep; use std::time::{Duration, Instant}; let instant = Instant::now(); let three_secs = Duration::from_secs(3); sleep(three_secs); assert!(instant.elapsed() >= three_secs);
pub fn checked_add(&self, duration: Duration) -> Option<Instant>
1.34.0[src]
Returns Some(t)
where t
is the time self + duration
if t
can be represented as
Instant
(which means it’s inside the bounds of the underlying data structure), None
otherwise.
pub fn checked_sub(&self, duration: Duration) -> Option<Instant>
1.34.0[src]
Returns Some(t)
where t
is the time self - duration
if t
can be represented as
Instant
(which means it’s inside the bounds of the underlying data structure), None
otherwise.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for START_TIME
impl Send for START_TIME
impl Sync for START_TIME
impl Unpin for START_TIME
impl UnwindSafe for START_TIME
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,