Struct Instant 

pub struct Instant(/* private fields */);

A measurement of a monotonically nondecreasing clock. Opaque and useful only with std::time::Duration.

Implementations

impl Instant

pub fn now() -> Self

Returns an instant corresponding to the current time.

pub fn elapsed(&self) -> Duration

Returns the amount of time elapsed since this instant was created, or zero duration if this instant is in the future.

pub fn checked_add(&self, duration: Duration) -> Option<Self>

Returns Some(T) where t is the time self + durationift can be represented as [Instant], otherwise None`.

pub fn checked_sub(&self, duration: Duration) -> Option<Self>

Returns Some(T) where t is the time self - durationift can be represented as [Instant], otherwise None`.

pub fn duration_since(&self, earlier: Instant) -> Duration

pub fn checked_duration_since(&self, earlier: Instant) -> Option<Duration>

Returns the duration since earlier if earlier is before self, otherwise returns None.

pub fn saturating_duration_since(&self, earlier: Instant) -> Duration

Returns the amount of time elapsed from another instant to this one, or zero duration if that instant is later than this one.

Trait Implementations

impl Add<Duration> for Instant

type Output = Instant

The resulting type after applying the + operator.

fn add(self, other: Duration) -> Self::Output

Performs the + operation.

impl AddAssign<Duration> for Instant

fn add_assign(&mut self, other: Duration)

Performs the += operation.

impl Clone for Instant

fn clone(&self) -> Instant

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Instant

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Instant> for Instant

fn from(instant: Instant) -> Self

Converts to this type from the input type.

impl Hash for Instant

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Instant

fn eq(&self, other: &Instant) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Instant

fn partial_cmp(&self, other: &Instant) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub for Instant

type Output = Duration

The resulting type after applying the - operator.

fn sub(self, other: Instant) -> Self::Output

Performs the - operation.

impl SubAssign<Duration> for Instant

fn sub_assign(&mut self, other: Duration)

Performs the -= operation.

impl Unwrap for Instant

type StdImpl = Instant

type TokioImpl = Instant

fn unwrap_std(self) -> Self::StdImpl

Unwraps the std underlying implementation of the MaybeFut type.

fn unwrap_tokio(self) -> Self::TokioImpl

Unwraps the tokio underlying implementation of the MaybeFut type.

fn unwrap_std_ref(&self) -> &Self::StdImpl

Unwraps the std underlying implementation of the MaybeFut type as a reference.

fn unwrap_tokio_ref(&self) -> &Self::TokioImpl

Unwraps the tokio underlying implementation of the MaybeFut type as a reference.

fn unwrap_std_mut(&mut self) -> &mut Self::StdImpl

Unwraps the std underlying implementation of the MaybeFut type as a mutable reference.

fn unwrap_tokio_mut(&mut self) -> &mut Self::TokioImpl

Unwraps the tokio underlying implementation of the MaybeFut type as a mutable reference.

fn get_std(self) -> Option<Self::StdImpl>

Safely unwraps the std underlying implementation of the MaybeFut type.

fn get_tokio(self) -> Option<Self::TokioImpl>

Safely unwraps the tokio underlying implementation of the MaybeFut type.

fn get_std_ref(&self) -> Option<&Self::StdImpl>

Safely unwraps the std underlying implementation of the MaybeFut type as a reference.

fn get_tokio_ref(&self) -> Option<&Self::TokioImpl>

Safely unwraps the tokio underlying implementation of the MaybeFut type as a reference.

fn get_std_mut(&mut self) -> Option<&mut Self::StdImpl>

Safely unwraps the std underlying implementation of the MaybeFut type as a mutable reference.

fn get_tokio_mut(&mut self) -> Option<&mut Self::TokioImpl>

Safely unwraps the tokio underlying implementation of the MaybeFut type as a mutable reference.

impl Copy for Instant

impl Eq for Instant

impl StructuralPartialEq for Instant