Enum PollResult

pub enum PollResult<Ordering, Data> {
    Item {
        data: Data,
        ordering: Ordering,
    },
    NoneBefore,
    Terminated,
}

The result of a OrderedStream::poll_next_before operation.

Variants

Item

An item with a corresponding ordering token.

Fields

data: Data

ordering: Ordering

NoneBefore

This stream will not return any items prior to the given point.

Terminated

This stream is terminated and should not be polled again.

Implementations

impl<D, T> PollResult<T, D>

pub fn into_data(self) -> Option<D>

Extract the data from the result.

pub fn into_tuple(self) -> Option<(T, D)>

Extract the item from the result.

pub fn map_data<R>(self, f: impl FnOnce(D) -> R) -> PollResult<T, R>

Apply a closure to the data.

impl<T, D, E> PollResult<T, Result<D, E>>

pub fn transpose_result(self) -> Result<PollResult<T, D>, E>

Extract the error of a Result item.

pub fn transpose_result_item(self) -> Result<PollResult<T, D>, (T, E)>

Extract the error and ordering from a Result item.

Trait Implementations

impl<Ordering: Clone, Data: Clone> Clone for PollResult<Ordering, Data>

fn clone(&self) -> PollResult<Ordering, Data>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Ordering: Debug, Data: Debug> Debug for PollResult<Ordering, Data>

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

Formats the value using the given formatter.

impl<Ordering: Hash, Data: Hash> Hash for PollResult<Ordering, Data>

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<Ordering: Ord, Data: Ord> Ord for PollResult<Ordering, Data>

fn cmp(&self, other: &PollResult<Ordering, Data>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<Ordering: PartialEq, Data: PartialEq> PartialEq for PollResult<Ordering, Data>

fn eq(&self, other: &PollResult<Ordering, Data>) -> 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<Ordering: PartialOrd, Data: PartialOrd> PartialOrd for PollResult<Ordering, Data>

fn partial_cmp(&self, other: &PollResult<Ordering, Data>) -> 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<Ordering: Copy, Data: Copy> Copy for PollResult<Ordering, Data>

impl<Ordering: Eq, Data: Eq> Eq for PollResult<Ordering, Data>

impl<Ordering, Data> StructuralPartialEq for PollResult<Ordering, Data>