Struct otter_api_tests::shapelib::Duration 1.3.0[−][src]
pub struct Duration { /* fields omitted */ }
Expand description
A Duration
type to represent a span of time, typically used for system
timeouts.
Each Duration
is composed of a whole number of seconds and a fractional part
represented in nanoseconds. If the underlying system does not support
nanosecond-level precision, APIs binding a system timeout will typically round up
the number of nanoseconds.
Duration
s implement many common traits, including Add
, Sub
, and other
ops
traits. It implements Default
by returning a zero-length Duration
.
Examples
use std::time::Duration; let five_seconds = Duration::new(5, 0); let five_seconds_and_five_nanos = five_seconds + Duration::new(0, 5); assert_eq!(five_seconds_and_five_nanos.as_secs(), 5); assert_eq!(five_seconds_and_five_nanos.subsec_nanos(), 5); let ten_millis = Duration::from_millis(10);
Formatting Duration
values
Duration
intentionally does not have a Display
impl, as there are a
variety of ways to format spans of time for human readability. Duration
provides a Debug
impl that shows the full precision of the value.
The Debug
output uses the non-ASCII “µs” suffix for microseconds. If your
program output may appear in contexts that cannot rely on full Unicode
compatibility, you may wish to format Duration
objects yourself or use a
crate to do so.
Implementations
🔬 This is a nightly-only experimental API. (duration_constants
)
duration_constants
)The duration of one second.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::SECOND, Duration::from_secs(1));
🔬 This is a nightly-only experimental API. (duration_constants
)
duration_constants
)The duration of one millisecond.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::MILLISECOND, Duration::from_millis(1));
🔬 This is a nightly-only experimental API. (duration_constants
)
duration_constants
)The duration of one microsecond.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::MICROSECOND, Duration::from_micros(1));
🔬 This is a nightly-only experimental API. (duration_constants
)
duration_constants
)The duration of one nanosecond.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::NANOSECOND, Duration::from_nanos(1));
A duration of zero time.
Examples
use std::time::Duration; let duration = Duration::ZERO; assert!(duration.is_zero()); assert_eq!(duration.as_nanos(), 0);
The maximum duration.
May vary by platform as necessary. Must be able to contain the difference between
two instances of Instant
or two instances of SystemTime
.
This constraint gives it a value of about 584,942,417,355 years in practice,
which is currently used on all platforms.
Examples
use std::time::Duration; assert_eq!(Duration::MAX, Duration::new(u64::MAX, 1_000_000_000 - 1));
Creates a new Duration
from the specified number of whole seconds and
additional nanoseconds.
If the number of nanoseconds is greater than 1 billion (the number of nanoseconds in a second), then it will carry over into the seconds provided.
Panics
This constructor will panic if the carry from the nanoseconds overflows the seconds counter.
Examples
use std::time::Duration; let five_seconds = Duration::new(5, 0);
Creates a new Duration
from the specified number of whole seconds.
Examples
use std::time::Duration; let duration = Duration::from_secs(5); assert_eq!(5, duration.as_secs()); assert_eq!(0, duration.subsec_nanos());
Creates a new Duration
from the specified number of milliseconds.
Examples
use std::time::Duration; let duration = Duration::from_millis(2569); assert_eq!(2, duration.as_secs()); assert_eq!(569_000_000, duration.subsec_nanos());
Creates a new Duration
from the specified number of microseconds.
Examples
use std::time::Duration; let duration = Duration::from_micros(1_000_002); assert_eq!(1, duration.as_secs()); assert_eq!(2000, duration.subsec_nanos());
Creates a new Duration
from the specified number of nanoseconds.
Examples
use std::time::Duration; let duration = Duration::from_nanos(1_000_000_123); assert_eq!(1, duration.as_secs()); assert_eq!(123, duration.subsec_nanos());
Returns true if this Duration
spans no time.
Examples
use std::time::Duration; assert!(Duration::ZERO.is_zero()); assert!(Duration::new(0, 0).is_zero()); assert!(Duration::from_nanos(0).is_zero()); assert!(Duration::from_secs(0).is_zero()); assert!(!Duration::new(1, 1).is_zero()); assert!(!Duration::from_nanos(1).is_zero()); assert!(!Duration::from_secs(1).is_zero());
Returns the number of whole seconds contained by this Duration
.
The returned value does not include the fractional (nanosecond) part of the
duration, which can be obtained using subsec_nanos
.
Examples
use std::time::Duration; let duration = Duration::new(5, 730023852); assert_eq!(duration.as_secs(), 5);
To determine the total number of seconds represented by the Duration
,
use as_secs
in combination with subsec_nanos
:
use std::time::Duration; let duration = Duration::new(5, 730023852); assert_eq!(5.730023852, duration.as_secs() as f64 + duration.subsec_nanos() as f64 * 1e-9);
Returns the fractional part of this Duration
, in whole milliseconds.
This method does not return the length of the duration when represented by milliseconds. The returned number always represents a fractional portion of a second (i.e., it is less than one thousand).
Examples
use std::time::Duration; let duration = Duration::from_millis(5432); assert_eq!(duration.as_secs(), 5); assert_eq!(duration.subsec_millis(), 432);
Returns the fractional part of this Duration
, in whole microseconds.
This method does not return the length of the duration when represented by microseconds. The returned number always represents a fractional portion of a second (i.e., it is less than one million).
Examples
use std::time::Duration; let duration = Duration::from_micros(1_234_567); assert_eq!(duration.as_secs(), 1); assert_eq!(duration.subsec_micros(), 234_567);
Returns the fractional part of this Duration
, in nanoseconds.
This method does not return the length of the duration when represented by nanoseconds. The returned number always represents a fractional portion of a second (i.e., it is less than one billion).
Examples
use std::time::Duration; let duration = Duration::from_millis(5010); assert_eq!(duration.as_secs(), 5); assert_eq!(duration.subsec_nanos(), 10_000_000);
Returns the total number of whole milliseconds contained by this Duration
.
Examples
use std::time::Duration; let duration = Duration::new(5, 730023852); assert_eq!(duration.as_millis(), 5730);
Returns the total number of whole microseconds contained by this Duration
.
Examples
use std::time::Duration; let duration = Duration::new(5, 730023852); assert_eq!(duration.as_micros(), 5730023);
Returns the total number of nanoseconds contained by this Duration
.
Examples
use std::time::Duration; let duration = Duration::new(5, 730023852); assert_eq!(duration.as_nanos(), 5730023852);
Checked Duration
addition. Computes self + other
, returning None
if overflow occurred.
Examples
Basic usage:
use std::time::Duration; assert_eq!(Duration::new(0, 0).checked_add(Duration::new(0, 1)), Some(Duration::new(0, 1))); assert_eq!(Duration::new(1, 0).checked_add(Duration::new(u64::MAX, 0)), None);
Saturating Duration
addition. Computes self + other
, returning Duration::MAX
if overflow occurred.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::new(0, 0).saturating_add(Duration::new(0, 1)), Duration::new(0, 1)); assert_eq!(Duration::new(1, 0).saturating_add(Duration::new(u64::MAX, 0)), Duration::MAX);
Checked Duration
subtraction. Computes self - other
, returning None
if the result would be negative or if overflow occurred.
Examples
Basic usage:
use std::time::Duration; assert_eq!(Duration::new(0, 1).checked_sub(Duration::new(0, 0)), Some(Duration::new(0, 1))); assert_eq!(Duration::new(0, 0).checked_sub(Duration::new(0, 1)), None);
Saturating Duration
subtraction. Computes self - other
, returning Duration::ZERO
if the result would be negative or if overflow occurred.
Examples
use std::time::Duration; assert_eq!(Duration::new(0, 1).saturating_sub(Duration::new(0, 0)), Duration::new(0, 1)); assert_eq!(Duration::new(0, 0).saturating_sub(Duration::new(0, 1)), Duration::ZERO);
Saturating Duration
multiplication. Computes self * other
, returning
Duration::MAX
if overflow occurred.
Examples
#![feature(duration_constants)] use std::time::Duration; assert_eq!(Duration::new(0, 500_000_001).saturating_mul(2), Duration::new(1, 2)); assert_eq!(Duration::new(u64::MAX - 1, 0).saturating_mul(2), Duration::MAX);
Checked Duration
division. Computes self / other
, returning None
if other == 0
.
Examples
Basic usage:
use std::time::Duration; assert_eq!(Duration::new(2, 0).checked_div(2), Some(Duration::new(1, 0))); assert_eq!(Duration::new(1, 0).checked_div(2), Some(Duration::new(0, 500_000_000))); assert_eq!(Duration::new(2, 0).checked_div(0), None);
Returns the number of seconds contained by this Duration
as f64
.
The returned value does include the fractional (nanosecond) part of the duration.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); assert_eq!(dur.as_secs_f64(), 2.7);
Returns the number of seconds contained by this Duration
as f32
.
The returned value does include the fractional (nanosecond) part of the duration.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); assert_eq!(dur.as_secs_f32(), 2.7);
Multiplies Duration
by f64
.
Panics
This method will panic if result is not finite, negative or overflows Duration
.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); assert_eq!(dur.mul_f64(3.14), Duration::new(8, 478_000_000)); assert_eq!(dur.mul_f64(3.14e5), Duration::new(847_800, 0));
Multiplies Duration
by f32
.
Panics
This method will panic if result is not finite, negative or overflows Duration
.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); // note that due to rounding errors result is slightly different // from 8.478 and 847800.0 assert_eq!(dur.mul_f32(3.14), Duration::new(8, 478_000_640)); assert_eq!(dur.mul_f32(3.14e5), Duration::new(847799, 969_120_256));
Divide Duration
by f64
.
Panics
This method will panic if result is not finite, negative or overflows Duration
.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); assert_eq!(dur.div_f64(3.14), Duration::new(0, 859_872_611)); // note that truncation is used, not rounding assert_eq!(dur.div_f64(3.14e5), Duration::new(0, 8_598));
Divide Duration
by f32
.
Panics
This method will panic if result is not finite, negative or overflows Duration
.
Examples
use std::time::Duration; let dur = Duration::new(2, 700_000_000); // note that due to rounding errors result is slightly // different from 0.859_872_611 assert_eq!(dur.div_f32(3.14), Duration::new(0, 859_872_576)); // note that truncation is used, not rounding assert_eq!(dur.div_f32(3.14e5), Duration::new(0, 8_598));
🔬 This is a nightly-only experimental API. (div_duration
)
div_duration
)Divide Duration
by Duration
and return f64
.
Examples
#![feature(div_duration)] use std::time::Duration; let dur1 = Duration::new(2, 700_000_000); let dur2 = Duration::new(5, 400_000_000); assert_eq!(dur1.div_duration_f64(dur2), 0.5);
🔬 This is a nightly-only experimental API. (div_duration
)
div_duration
)Divide Duration
by Duration
and return f32
.
Examples
#![feature(div_duration)] use std::time::Duration; let dur1 = Duration::new(2, 700_000_000); let dur2 = Duration::new(5, 400_000_000); assert_eq!(dur1.div_duration_f32(dur2), 0.5);
Trait Implementations
Panics
This function may panic if the resulting point in time cannot be represented by the
underlying data structure. See SystemTime::checked_add
for a version without panic.
type Output = SystemTime
type Output = SystemTime
The resulting type after applying the +
operator.
Performs the +=
operation. Read more
Performs the +=
operation. Read more
Performs the +=
operation. Read more
pub fn add_assign(&mut self, rhs: Duration)
pub fn add_assign(&mut self, rhs: Duration)
Performs the +=
operation. Read more
pub fn deserialize<D>(
deserializer: D
) -> Result<Duration, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
[src]
pub fn deserialize<D>(
deserializer: D
) -> Result<Duration, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,
[src]Deserialize this value from the given Serde deserializer. Read more
Performs the /=
operation. Read more
Performs the *=
operation. Read more
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
type Sampler = UniformDuration
type Sampler = UniformDuration
The UniformSampler
implementation supporting type X
.
pub fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,
[src]
pub fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,
[src]Serialize this value into the given Serde serializer. Read more
type Output = SystemTime
type Output = SystemTime
The resulting type after applying the -
operator.
Performs the -
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
Performs the -=
operation. Read more
pub fn sub_assign(&mut self, rhs: Duration)
pub fn sub_assign(&mut self, rhs: Duration)
Performs the -=
operation. Read more
Auto Trait Implementations
impl RefUnwindSafe for Duration
impl UnwindSafe for Duration
Blanket Implementations
Mutably borrows from an owned value. Read more
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<R, Global>
impl<R> Read for Box<R, Global> where
R: Read + ?Sized, impl<W> Write for Box<W, Global> where
W: Write + ?Sized, impl<I, A> Iterator for Box<I, A> where
A: Allocator,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
A: Allocator + 'static,
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<R, Global>
impl<R> Read for Box<R, Global> where
R: Read + ?Sized, impl<W> Write for Box<W, Global> where
W: Write + ?Sized, impl<I, A> Iterator for Box<I, A> where
A: Allocator,
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
A: Allocator + 'static,
F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;
Convert Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
. Read more
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read more
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert &mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s. Read more
impl<A> DynCastExt for A
impl<A> DynCastExt for A
pub fn dyn_cast<T>(
self
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source> where
T: ?Sized,
A: DynCastExtHelper<T>,
pub fn dyn_cast<T>(
self
) -> Result<<A as DynCastExtHelper<T>>::Target, <A as DynCastExtHelper<T>>::Source> where
T: ?Sized,
A: DynCastExtHelper<T>,
Use this to cast from one trait object type to another. Read more
pub fn dyn_upcast<T>(self) -> <A as DynCastExtAdvHelper<T, T>>::Target where
T: ?Sized,
A: DynCastExtAdvHelper<T, T, Source = <A as DynCastExtAdvHelper<T, T>>::Target>,
pub fn dyn_upcast<T>(self) -> <A as DynCastExtAdvHelper<T, T>>::Target where
T: ?Sized,
A: DynCastExtAdvHelper<T, T, Source = <A as DynCastExtAdvHelper<T, T>>::Target>,
Use this to upcast a trait to one of its supertraits. Read more
pub fn dyn_cast_adv<F, T>(
self
) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source> where
T: ?Sized,
A: DynCastExtAdvHelper<F, T>,
F: ?Sized,
pub fn dyn_cast_adv<F, T>(
self
) -> Result<<A as DynCastExtAdvHelper<F, T>>::Target, <A as DynCastExtAdvHelper<F, T>>::Source> where
T: ?Sized,
A: DynCastExtAdvHelper<F, T>,
F: ?Sized,
pub fn dyn_cast_with_config<C>(
self
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source> where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
pub fn dyn_cast_with_config<C>(
self
) -> Result<<A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Target, <A as DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>>::Source> where
C: DynCastConfig,
A: DynCastExtAdvHelper<<C as DynCastConfig>::Source, <C as DynCastConfig>::Target>,
Use this to cast from one trait object type to another. With this method the type parameter is a config type that uniquely specifies which cast should be preformed. Read more
Compare self to key
and return true
if they are equal.
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>
impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
[src]Immutably borrows from an owned value. See Borrow::borrow
Read more
pub fn vzip(self) -> V