Struct async_std::stream::Empty[−][src]

pub struct Empty<T> { /* fields omitted */ }

A stream that doesn’t yield any items.

This stream is constructed by the empty function.

Trait Implementations

`impl<T: Debug> Debug for Empty<T>`[src]

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

`impl<T> Stream for Empty<T>`[src]

`type Item = T`

Values yielded by the stream.

`fn poll_next( self: Pin<&mut Self>, _: &mut Context<'_> ) -> Poll<Option<Self::Item>>`[src]

`pub fn size_hint(&self) -> (usize, Option<usize>)`[src]

Auto Trait Implementations

`impl<T> RefUnwindSafe for Empty<T> where T: RefUnwindSafe,`

`impl<T> Send for Empty<T> where T: Send,`

`impl<T> Sync for Empty<T> where T: Sync,`

`impl<T> Unpin for Empty<T> where T: Unpin,`

`impl<T> UnwindSafe for Empty<T> where T: UnwindSafe,`

Blanket Implementations

`impl<T> Any for T where T: 'static + ?Sized,` [src]

`pub fn type_id(&self) -> TypeId`[src]

`impl<T> Borrow<T> for T where T: ?Sized,` [src]

`pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

`impl<T> BorrowMut<T> for T where T: ?Sized,` [src]

`pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut F impl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;`[src]

`impl<T> From<T> for T`[src]

`pub fn from(t: T) -> T`[src]

`impl<T, U> Into for T where U: From<T>,` [src]

`pub fn into(self) -> U`[src]

`impl<S> StreamExt for S where S: Stream + ?Sized,` [src]

`pub fn poll_next(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> where Self: Unpin,` [src]

`pub fn next(&mut self) -> NextFuture<'_, Self>ⓘNotable traits for NextFuture<'_, S> impl<'_, S> Future for NextFuture<'_, S> where S: Stream + Unpin + ?Sized, type Output = Option<<S as Stream>::Item>; where Self: Unpin,` [src]

`pub fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self>ⓘNotable traits for TryNextFuture<'_, S> impl<'_, T, E, S> Future for TryNextFuture<'_, S> where S: Stream<Item = Result<T, E>> + Unpin + ?Sized, type Output = Result<Option<T>, E>; where Self: Stream<Item = Result<T, E>> + Unpin,` [src]

`pub fn count(self) -> CountFuture<Self>ⓘNotable traits for CountFuture<S> impl<S> Future for CountFuture<S> where S: Stream + ?Sized, type Output = usize;`[src]

`pub fn map<T, F>(self, f: F) -> Map<Self, F> where F: FnMut(Self::Item) -> T,` [src]

`pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where F: FnMut(Self::Item) -> U, U: Stream,` [src]

`pub fn flatten(self) -> Flatten<Self> where Self::Item: Stream,` [src]

`pub fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut> where F: FnMut(Self::Item) -> Fut, Fut: Future,` [src]

`pub fn filter(self, predicate: P) -> Filter<Self, P> where P: FnMut(&Self::Item) -> bool,` [src]

`pub fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F> where F: FnMut(Self::Item) -> Option<T>,` [src]

`pub fn take(self, n: usize) -> Take<Self>`[src]

`pub fn take_while(self, predicate: P) -> TakeWhile<Self, P> where P: FnMut(&Self::Item) -> bool,` [src]

`pub fn skip(self, n: usize) -> Skip<Self>`[src]

`pub fn skip_while(self, predicate: P) -> SkipWhile<Self, P> where P: FnMut(&Self::Item) -> bool,` [src]

`pub fn step_by(self, step: usize) -> StepBy<Self>`[src]

`pub fn chain(self, other: U) -> Chain<Self, U> where U: Stream<Item = Self::Item>,` [src]

`pub fn cloned<'a, T>(self) -> Cloned<Self> where Self: Stream<Item = &'a T>, T: Clone + 'a,` [src]

`pub fn copied<'a, T>(self) -> Copied<Self> where Self: Stream<Item = &'a T>, T: Copy + 'a,` [src]

`pub fn collect<C>(self) -> CollectFuture<Self, C>ⓘNotable traits for CollectFuture<S, C> impl<S, C> Future for CollectFuture<S, C> where C: Default + Extend<<S as Stream>::Item>, S: Stream, type Output = C; where C: Default + Extend<Self::Item>,` [src]

`pub fn try_collect<T, E, C>(self) -> TryCollectFuture<Self, C>ⓘNotable traits for TryCollectFuture<S, C> impl<T, E, S, C> Future for TryCollectFuture<S, C> where C: Default + Extend<T>, S: Stream<Item = Result<T, E>>, type Output = Result<C, E>; where Self: Stream<Item = Result<T, E>>, C: Default + Extend<T>,` [src]

`pub fn partition<B, P>(self, predicate: P) -> PartitionFuture<Self, P, B>ⓘNotable traits for PartitionFuture<S, P, B> impl<S, P, B> Future for PartitionFuture<S, P, B> where P: FnMut(&<S as Stream>::Item) -> bool, B: Default + Extend<<S as Stream>::Item>, S: Stream, type Output = (B, B); where P: FnMut(&Self::Item) -> bool, B: Default + Extend<Self::Item>,` [src]

`pub fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T>ⓘNotable traits for FoldFuture<S, F, T> impl<S, F, T> Future for FoldFuture<S, F, T> where F: FnMut(T, <S as Stream>::Item) -> T, S: Stream, type Output = T; where F: FnMut(T, Self::Item) -> T,` [src]

`pub fn try_fold<T, E, F, B>( &mut self, init: B, f: F ) -> TryFoldFuture<'_, Self, F, B>ⓘNotable traits for TryFoldFuture<'a, S, F, B> impl<'a, T, E, S, F, B> Future for TryFoldFuture<'a, S, F, B> where F: FnMut(B, T) -> Result<B, E>, S: Stream<Item = Result<T, E>> + Unpin, type Output = Result<B, E>; where Self: Stream<Item = Result<T, E>> + Unpin, F: FnMut(B, T) -> Result<B, E>,` [src]

`pub fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where F: FnMut(&mut St, Self::Item) -> Option,` [src]

`pub fn fuse(self) -> Fuse<Self>`[src]

`pub fn cycle(self) -> Cycle<Self> where Self: Clone,` [src]

`pub fn enumerate(self) -> Enumerate<Self>`[src]

`pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnMut(&Self::Item),` [src]

`pub fn nth(&mut self, n: usize) -> NthFuture<'_, Self>ⓘNotable traits for NthFuture<'a, S> impl<'a, S> Future for NthFuture<'a, S> where S: Stream + Unpin + ?Sized, type Output = Option<<S as Stream>::Item>; where Self: Unpin,` [src]

`pub fn last(self) -> LastFuture<Self>ⓘNotable traits for LastFuture<S> impl<S> Future for LastFuture<S> where S: Stream, type Output = Option<<S as Stream>::Item>;`[src]

`pub fn find(&mut self, predicate: P) -> FindFuture<'_, Self, P>ⓘNotable traits for FindFuture<'a, S, P> impl<'a, S, P> Future for FindFuture<'a, S, P> where P: FnMut(&<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = Option<<S as Stream>::Item>; where Self: Unpin, P: FnMut(&Self::Item) -> bool,` [src]

`pub fn find_map<F, B>(&mut self, f: F) -> FindMapFuture<'_, Self, F>ⓘNotable traits for FindMapFuture<'a, S, F> impl<'a, S, B, F> Future for FindMapFuture<'a, S, F> where F: FnMut(<S as Stream>::Item) -> Option, S: Stream + Unpin + ?Sized, type Output = Option; where Self: Unpin, F: FnMut(Self::Item) -> Option,` [src]

`pub fn position(&mut self, predicate: P) -> PositionFuture<'_, Self, P>ⓘNotable traits for PositionFuture<'a, S, P> impl<'a, S, P> Future for PositionFuture<'a, S, P> where P: FnMut(<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = Option<usize>; where Self: Unpin, P: FnMut(Self::Item) -> bool,` [src]

`pub fn all(&mut self, predicate: P) -> AllFuture<'_, Self, P>ⓘNotable traits for AllFuture<'_, S, P> impl<'_, S, P> Future for AllFuture<'_, S, P> where P: FnMut(<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = bool; where Self: Unpin, P: FnMut(Self::Item) -> bool,` [src]

`pub fn any(&mut self, predicate: P) -> AnyFuture<'_, Self, P>ⓘNotable traits for AnyFuture<'_, S, P> impl<'_, S, P> Future for AnyFuture<'_, S, P> where P: FnMut(<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = bool; where Self: Unpin, P: FnMut(Self::Item) -> bool,` [src]

`pub fn for_each<F>(self, f: F) -> ForEachFuture<Self, F>ⓘNotable traits for ForEachFuture<S, F> impl<S, F> Future for ForEachFuture<S, F> where F: FnMut(<S as Stream>::Item), S: Stream, type Output = (); where F: FnMut(Self::Item),` [src]

`pub fn try_for_each<F, E>(&mut self, f: F) -> TryForEachFuture<'_, Self, F>ⓘNotable traits for TryForEachFuture<'a, S, F> impl<'a, S, F, E> Future for TryForEachFuture<'a, S, F> where F: FnMut(<S as Stream>::Item) -> Result<(), E>, S: Stream + Unpin + ?Sized, type Output = Result<(), E>; where Self: Unpin, F: FnMut(Self::Item) -> Result<(), E>,` [src]

`pub fn zip(self, other: U) -> Zip<Self, U> where U: Stream,` [src]

`pub fn unzip<A, B, FromA, FromB>(self) -> UnzipFuture<Self, FromA, FromB>ⓘNotable traits for UnzipFuture<S, FromA, FromB> impl<S, A, B, FromA, FromB> Future for UnzipFuture<S, FromA, FromB> where FromA: Default + Extend<A>, FromB: Default + Extend, S: Stream<Item = (A, B)>, type Output = (FromA, FromB); where Self: Stream<Item = (A, B)>, FromA: Default + Extend<A>, FromB: Default + Extend,` [src]

`pub fn or<S>(self, other: S) -> Or<Self, S> where S: Stream<Item = Self::Item>,` [src]

`pub fn race<S>(self, other: S) -> Race<Self, S> where S: Stream<Item = Self::Item>,` [src]

`pub fn boxed<'a>( self ) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘNotable traits for Pin impl Future for Pin where P: Unpin + DerefMut, ::Target: Future, type Output = <::Target as Future>::Output; where Self: Send + 'a,` [src]

`pub fn boxed_local<'a>( self ) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a, Global>>ⓘNotable traits for Pin impl Future for Pin where P: Unpin + DerefMut, ::Target: Future, type Output = <::Target as Future>::Output; where Self: 'a,` [src]

`impl<T, U> TryFrom for T where U: Into<T>,` [src]

`type Error = Infallible`

The type returned in the event of a conversion error.

`pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>`[src]

`impl<T, U> TryInto for T where U: TryFrom<T>,` [src]

`type Error = >::Error`

The type returned in the event of a conversion error.

`pub fn try_into(self) -> Result<U, >::Error>`[src]

`impl<S, T, E> TryStream for S where S: Stream<Item = Result<T, E>> + ?Sized,` [src]

`type Ok = T`

The type of successful values yielded by this future

`type Error = E`

The type of failures yielded by this future

`pub fn try_poll_next( self: Pin<&mut S>, cx: &mut Context<'_> ) -> Poll<Option<Result<<S as TryStream>::Ok, <S as TryStream>::Error>>>`[src]

Struct async_std::stream::Empty[−][src]

Trait Implementations

impl<T: Debug> Debug for Empty<T>[src]

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

impl<T> Stream for Empty<T>[src]

type Item = T

fn poll_next( self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Option<Self::Item>>[src]

pub fn size_hint(&self) -> (usize, Option<usize>)[src]

Auto Trait Implementations

impl<T> RefUnwindSafe for Empty<T> where T: RefUnwindSafe,

impl<T> Send for Empty<T> where T: Send,

impl<T> Sync for Empty<T> where T: Sync,

impl<T> Unpin for Empty<T> where T: Unpin,

impl<T> UnwindSafe for Empty<T> where T: UnwindSafe,

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized, [src]

pub fn type_id(&self) -> TypeId[src]

impl<T> Borrow<T> for T where T: ?Sized, [src]

pub fn borrow(&self) -> &TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

impl<T> BorrowMut<T> for T where T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut TⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where F: Future + Unpin + ?Sized, type Output = <F as Future>::Output;[src]

Notable traits for &'_ mut F

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

impl<T, U> Into<U> for T where U: From<T>, [src]

pub fn into(self) -> U[src]

impl<S> StreamExt for S where S: Stream + ?Sized, [src]

pub fn poll_next(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> where Self: Unpin, [src]

pub fn next(&mut self) -> NextFuture<'_, Self>ⓘNotable traits for NextFuture<'_, S>impl<'_, S> Future for NextFuture<'_, S> where S: Stream + Unpin + ?Sized, type Output = Option<<S as Stream>::Item>; where Self: Unpin, [src]

Notable traits for NextFuture<'_, S>

pub fn try_next<T, E>(&mut self) -> TryNextFuture<'_, Self>ⓘNotable traits for TryNextFuture<'_, S>impl<'_, T, E, S> Future for TryNextFuture<'_, S> where S: Stream<Item = Result<T, E>> + Unpin + ?Sized, type Output = Result<Option<T>, E>; where Self: Stream<Item = Result<T, E>> + Unpin, [src]

Notable traits for TryNextFuture<'_, S>

pub fn count(self) -> CountFuture<Self>ⓘNotable traits for CountFuture<S>impl<S> Future for CountFuture<S> where S: Stream + ?Sized, type Output = usize;[src]

Notable traits for CountFuture<S>

pub fn map<T, F>(self, f: F) -> Map<Self, F> where F: FnMut(Self::Item) -> T, [src]

pub fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F> where F: FnMut(Self::Item) -> U, U: Stream, [src]

pub fn flatten(self) -> Flatten<Self> where Self::Item: Stream, [src]

pub fn then<F, Fut>(self, f: F) -> Then<Self, F, Fut> where F: FnMut(Self::Item) -> Fut, Fut: Future, [src]

pub fn filter<P>(self, predicate: P) -> Filter<Self, P> where P: FnMut(&Self::Item) -> bool, [src]

pub fn filter_map<T, F>(self, f: F) -> FilterMap<Self, F> where F: FnMut(Self::Item) -> Option<T>, [src]

pub fn take(self, n: usize) -> Take<Self>[src]

pub fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where P: FnMut(&Self::Item) -> bool, [src]

pub fn skip(self, n: usize) -> Skip<Self>[src]

pub fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where P: FnMut(&Self::Item) -> bool, [src]

pub fn step_by(self, step: usize) -> StepBy<Self>[src]

pub fn chain<U>(self, other: U) -> Chain<Self, U> where U: Stream<Item = Self::Item>, [src]

pub fn cloned<'a, T>(self) -> Cloned<Self> where Self: Stream<Item = &'a T>, T: Clone + 'a, [src]

pub fn copied<'a, T>(self) -> Copied<Self> where Self: Stream<Item = &'a T>, T: Copy + 'a, [src]

pub fn collect<C>(self) -> CollectFuture<Self, C>ⓘNotable traits for CollectFuture<S, C>impl<S, C> Future for CollectFuture<S, C> where C: Default + Extend<<S as Stream>::Item>, S: Stream, type Output = C; where C: Default + Extend<Self::Item>, [src]

Notable traits for CollectFuture<S, C>

Notable traits for TryCollectFuture<S, C>

Notable traits for PartitionFuture<S, P, B>

pub fn fold<T, F>(self, init: T, f: F) -> FoldFuture<Self, F, T>ⓘNotable traits for FoldFuture<S, F, T>impl<S, F, T> Future for FoldFuture<S, F, T> where F: FnMut(T, <S as Stream>::Item) -> T, S: Stream, type Output = T; where F: FnMut(T, Self::Item) -> T, [src]

Notable traits for FoldFuture<S, F, T>

Notable traits for TryFoldFuture<'a, S, F, B>

pub fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F> where F: FnMut(&mut St, Self::Item) -> Option<B>, [src]

pub fn fuse(self) -> Fuse<Self>[src]

pub fn cycle(self) -> Cycle<Self> where Self: Clone, [src]

pub fn enumerate(self) -> Enumerate<Self>[src]

pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnMut(&Self::Item), [src]

pub fn nth(&mut self, n: usize) -> NthFuture<'_, Self>ⓘNotable traits for NthFuture<'a, S>impl<'a, S> Future for NthFuture<'a, S> where S: Stream + Unpin + ?Sized, type Output = Option<<S as Stream>::Item>; where Self: Unpin, [src]

Notable traits for NthFuture<'a, S>

pub fn last(self) -> LastFuture<Self>ⓘNotable traits for LastFuture<S>impl<S> Future for LastFuture<S> where S: Stream, type Output = Option<<S as Stream>::Item>;[src]

Notable traits for LastFuture<S>

Notable traits for FindFuture<'a, S, P>

Notable traits for FindMapFuture<'a, S, F>

Notable traits for PositionFuture<'a, S, P>

pub fn all<P>(&mut self, predicate: P) -> AllFuture<'_, Self, P>ⓘNotable traits for AllFuture<'_, S, P>impl<'_, S, P> Future for AllFuture<'_, S, P> where P: FnMut(<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = bool; where Self: Unpin, P: FnMut(Self::Item) -> bool, [src]

Notable traits for AllFuture<'_, S, P>

pub fn any<P>(&mut self, predicate: P) -> AnyFuture<'_, Self, P>ⓘNotable traits for AnyFuture<'_, S, P>impl<'_, S, P> Future for AnyFuture<'_, S, P> where P: FnMut(<S as Stream>::Item) -> bool, S: Stream + Unpin + ?Sized, type Output = bool; where Self: Unpin, P: FnMut(Self::Item) -> bool, [src]

Notable traits for AnyFuture<'_, S, P>

pub fn for_each<F>(self, f: F) -> ForEachFuture<Self, F>ⓘNotable traits for ForEachFuture<S, F>impl<S, F> Future for ForEachFuture<S, F> where F: FnMut(<S as Stream>::Item), S: Stream, type Output = (); where F: FnMut(Self::Item), [src]

Notable traits for ForEachFuture<S, F>

Notable traits for TryForEachFuture<'a, S, F>

pub fn zip<U>(self, other: U) -> Zip<Self, U> where U: Stream, [src]

Notable traits for UnzipFuture<S, FromA, FromB>

pub fn or<S>(self, other: S) -> Or<Self, S> where S: Stream<Item = Self::Item>, [src]

pub fn race<S>(self, other: S) -> Race<Self, S> where S: Stream<Item = Self::Item>, [src]

pub fn boxed<'a>( self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a + Send, Global>>ⓘNotable traits for Pin<P>impl<P> Future for Pin<P> where P: Unpin + DerefMut, <P as Deref>::Target: Future, type Output = <<P as Deref>::Target as Future>::Output; where Self: Send + 'a, [src]