[−][src]Struct futures::stream::TryNext

#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct TryNext<'a, St> where
    St: Unpin + 'a + ?Sized,  { /* fields omitted */ }

Future for the try_next method.

Trait Implementations

`impl<'_, St> Future for TryNext<'_, St> where St: Unpin + TryStream + ?Sized,` [src]

`type Output = Result<Option<<St as TryStream>::Ok>, <St as TryStream>::Error>`

The type of value produced on completion.

`fn poll( self: Pin<&mut TryNext<'_, St>>, cx: &mut Context ) -> Poll<<TryNext<'_, St> as Future>::Output>`[src]

`impl<'_, St> Unpin for TryNext<'_, St> where St: Unpin + ?Sized,` [src]

`impl<'a, St> Debug for TryNext<'a, St> where St: Unpin + Debug + ?Sized,` [src]

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

`impl<'_, St> FusedFuture for TryNext<'_, St> where St: Unpin + FusedStream + TryStream + ?Sized,` [src]

`fn is_terminated(&self) -> bool`[src]

Auto Trait Implementations

`impl<'a, St: ?Sized> Send for TryNext<'a, St> where St: Send,`

`impl<'a, St: ?Sized> Sync for TryNext<'a, St> where St: Sync,`

`impl<'a, St> !UnwindSafe for TryNext<'a, St>`

`impl<'a, St: ?Sized> RefUnwindSafe for TryNext<'a, St> where St: RefUnwindSafe,`

Blanket Implementations

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

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

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

`fn from(t: T) -> T`[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.

`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.

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

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

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

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

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

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

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

`impl<F, T, E> TryFuture for F where F: Future<Output = 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

`fn try_poll(self: Pin<&mut F>, cx: &mut Context) -> Poll<<F as Future>::Output>`[src]

`impl<T> FutureExt for T where T: Future + ?Sized,` [src]

ⓘImportant traits for Map<Fut, F>
Important traits for Map<Fut, F>
`impl<Fut, F, T> Future for Map<Fut, F> where F: FnOnce(<Fut as Future>::Output) -> T, Fut: Future, type Output = T;`
`fn map<U, F>(self, f: F) -> Map<Self, F> where F: FnOnce(Self::Output) -> U,` [src]

ⓘImportant traits for Then<Fut1, Fut2, F>
Important traits for Then<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for Then<Fut1, Fut2, F> where F: FnOnce(<Fut1 as Future>::Output) -> Fut2, Fut1: Future, Fut2: Future, type Output = <Fut2 as Future>::Output;`
`fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where F: FnOnce(Self::Output) -> Fut, Fut: Future,` [src]

ⓘImportant traits for Either<A, B>
Important traits for Either<A, B>
`impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = <A as Future>::Output>, type Output = <A as Future>::Output;`
`fn left_future(self) -> Either<Self, B> where B: Future<Output = Self::Output>,` [src]

ⓘImportant traits for Either<A, B>
Important traits for Either<A, B>
`impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = <A as Future>::Output>, type Output = <A as Future>::Output;`
`fn right_future<A>(self) -> Either<A, Self> where A: Future<Output = Self::Output>,` [src]

`fn into_stream(self) -> IntoStream<Self>`[src]

ⓘImportant traits for Flatten<Fut>
Important traits for Flatten<Fut>
`impl<Fut> Future for Flatten<Fut> where Fut: Future, <Fut as Future>::Output: Future, type Output = <<Fut as Future>::Output as Future>::Output;`
`fn flatten(self) -> Flatten<Self> where Self::Output: Future,` [src]

`fn flatten_stream(self) -> FlattenStream<Self> where Self::Output: Stream,` [src]

ⓘImportant traits for Fuse<Fut>
Important traits for Fuse<Fut>
`impl<Fut> Future for Fuse<Fut> where Fut: Future, type Output = <Fut as Future>::Output;`
`fn fuse(self) -> Fuse<Self>`[src]

ⓘImportant traits for Inspect<Fut, F>
Important traits for Inspect<Fut, F>
`impl<Fut, F> Future for Inspect<Fut, F> where F: FnOnce(&<Fut as Future>::Output), Fut: Future, type Output = <Fut as Future>::Output;`
`fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnOnce(&Self::Output),` [src]

ⓘImportant traits for CatchUnwind<Fut>
Important traits for CatchUnwind<Fut>
`impl<Fut> Future for CatchUnwind<Fut> where Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send>>;`
`fn catch_unwind(self) -> CatchUnwind<Self> where Self: UnwindSafe,` [src]

ⓘImportant traits for Shared<Fut>
Important traits for Shared<Fut>
`impl<Fut> Future for Shared<Fut> where Fut: Future, <Fut as Future>::Output: Clone, type Output = <Fut as Future>::Output;`
`fn shared(self) -> Shared<Self> where Self::Output: Clone,` [src]

`fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)`[src]

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

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

ⓘImportant traits for UnitError<Fut>
Important traits for UnitError<Fut>
`impl<Fut, T> Future for UnitError<Fut> where Fut: Future<Output = T>, type Output = Result<T, ()>;`
`fn unit_error(self) -> UnitError<Self>`[src]

ⓘImportant traits for NeverError<Fut>
Important traits for NeverError<Fut>
`impl<Fut, T> Future for NeverError<Fut> where Fut: Future<Output = T>, type Output = Result<T, Infallible>;`
`fn never_error(self) -> NeverError<Self>`[src]

`fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where Self: Unpin,` [src]

`fn now_or_never(self) -> Option<Self::Output>`[src]

`impl<Fut> TryFutureExt for Fut where Fut: TryFuture + ?Sized,` [src]

`fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where Self::Ok: Sink<Item>, <Self::Ok as Sink<Item>>::Error == Self::Error,` [src]

ⓘImportant traits for MapOk<Fut, F>
Important traits for MapOk<Fut, F>
`impl<Fut, F, T> Future for MapOk<Fut, F> where F: FnOnce(<Fut as TryFuture>::Ok) -> T, Fut: TryFuture, type Output = Result<T, <Fut as TryFuture>::Error>;`
`fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where F: FnOnce(Self::Ok) -> T,` [src]

ⓘImportant traits for MapErr<Fut, F>
Important traits for MapErr<Fut, F>
`impl<Fut, F, E> Future for MapErr<Fut, F> where F: FnOnce(<Fut as TryFuture>::Error) -> E, Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, E>;`
`fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where F: FnOnce(Self::Error) -> E,` [src]

ⓘImportant traits for ErrInto<Fut, E>
Important traits for ErrInto<Fut, E>
`impl<Fut, E> Future for ErrInto<Fut, E> where Fut: TryFuture, <Fut as TryFuture>::Error: Into<E>, type Output = Result<<Fut as TryFuture>::Ok, E>;`
`fn err_into<E>(self) -> ErrInto<Self, E> where Self::Error: Into<E>,` [src]

ⓘImportant traits for AndThen<Fut1, Fut2, F>
Important traits for AndThen<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for AndThen<Fut1, Fut2, F> where F: FnOnce(<Fut1 as TryFuture>::Ok) -> Fut2, Fut1: TryFuture, Fut2: TryFuture<Error = <Fut1 as TryFuture>::Error>, type Output = Result<<Fut2 as TryFuture>::Ok, <Fut2 as TryFuture>::Error>;`
`fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where F: FnOnce(Self::Ok) -> Fut, Fut: TryFuture<Error = Self::Error>,` [src]

ⓘImportant traits for OrElse<Fut1, Fut2, F>
Important traits for OrElse<Fut1, Fut2, F>
`impl<Fut1, Fut2, F> Future for OrElse<Fut1, Fut2, F> where F: FnOnce(<Fut1 as TryFuture>::Error) -> Fut2, Fut1: TryFuture, Fut2: TryFuture<Ok = <Fut1 as TryFuture>::Ok>, type Output = Result<<Fut2 as TryFuture>::Ok, <Fut2 as TryFuture>::Error>;`
`fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where F: FnOnce(Self::Error) -> Fut, Fut: TryFuture<Ok = Self::Ok>,` [src]

ⓘImportant traits for InspectOk<Fut, F>
Important traits for InspectOk<Fut, F>
`impl<Fut, F> Future for InspectOk<Fut, F> where F: FnOnce(&<Fut as TryFuture>::Ok), Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;`
`fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where F: FnOnce(&Self::Ok),` [src]

ⓘImportant traits for InspectErr<Fut, F>
Important traits for InspectErr<Fut, F>
`impl<Fut, F> Future for InspectErr<Fut, F> where F: FnOnce(&<Fut as TryFuture>::Error), Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;`
`fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where F: FnOnce(&Self::Error),` [src]

`fn try_flatten_stream(self) -> TryFlattenStream<Self> where Self::Ok: TryStream, <Self::Ok as TryStream>::Error == Self::Error,` [src]

ⓘImportant traits for UnwrapOrElse<Fut, F>
Important traits for UnwrapOrElse<Fut, F>
`impl<Fut, F> Future for UnwrapOrElse<Fut, F> where F: FnOnce(<Fut as TryFuture>::Error) -> <Fut as TryFuture>::Ok, Fut: TryFuture, type Output = <Fut as TryFuture>::Ok;`
`fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where F: FnOnce(Self::Error) -> Self::Ok,` [src]

ⓘImportant traits for Compat<R>
Important traits for Compat<R>
`impl<R> Read for Compat<R> where R: Unpin + AsyncRead, impl<W> Write for Compat<W> where W: Unpin + AsyncWrite,`
`fn compat(self) -> Compat<Self> where Self: Unpin,` [src]

ⓘImportant traits for IntoFuture<Fut>
Important traits for IntoFuture<Fut>
`impl<Fut> Future for IntoFuture<Fut> where Fut: TryFuture, type Output = Result<<Fut as TryFuture>::Ok, <Fut as TryFuture>::Error>;`
`fn into_future(self) -> IntoFuture<Self>`[src]

`fn try_poll_unpin( &mut self, cx: &mut Context ) -> Poll<Result<Self::Ok, Self::Error>> where Self: Unpin,` [src]

[−][src]Struct futures::stream::TryNext

Trait Implementations

impl<'_, St> Future for TryNext<'_, St> where St: Unpin + TryStream + ?Sized, [src]

type Output = Result<Option<<St as TryStream>::Ok>, <St as TryStream>::Error>

fn poll( self: Pin<&mut TryNext<'_, St>>, cx: &mut Context) -> Poll<<TryNext<'_, St> as Future>::Output>[src]

impl<'_, St> Unpin for TryNext<'_, St> where St: Unpin + ?Sized, [src]

impl<'a, St> Debug for TryNext<'a, St> where St: Unpin + Debug + ?Sized, [src]

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

impl<'_, St> FusedFuture for TryNext<'_, St> where St: Unpin + FusedStream + TryStream + ?Sized, [src]

fn is_terminated(&self) -> bool[src]

Auto Trait Implementations

impl<'a, St: ?Sized> Send for TryNext<'a, St> where St: Send,

impl<'a, St: ?Sized> Sync for TryNext<'a, St> where St: Sync,

impl<'a, St> !UnwindSafe for TryNext<'a, St>

impl<'a, St: ?Sized> RefUnwindSafe for TryNext<'a, St> where St: RefUnwindSafe,

Blanket Implementations

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

fn into(self) -> U[src]

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

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

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

type Error = Infallible

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

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

type Error = <U as TryFrom<T>>::Error

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

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

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

Important traits for &'_ mut F

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

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

Important traits for &'_ mut F

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

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

impl<F, T, E> TryFuture for F where F: Future<Output = Result<T, E>> + ?Sized, [src]

type Ok = T

type Error = E

fn try_poll(self: Pin<&mut F>, cx: &mut Context) -> Poll<<F as Future>::Output>[src]

impl<T> FutureExt for T where T: Future + ?Sized, [src]

ⓘImportant traits for Map<Fut, F>Important traits for Map<Fut, F>impl<Fut, F, T> Future for Map<Fut, F> where F: FnOnce(<Fut as Future>::Output) -> T, Fut: Future, type Output = T;fn map<U, F>(self, f: F) -> Map<Self, F> where F: FnOnce(Self::Output) -> U, [src]

Important traits for Map<Fut, F>

Important traits for Then<Fut1, Fut2, F>

ⓘImportant traits for Either<A, B>Important traits for Either<A, B>impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = <A as Future>::Output>, type Output = <A as Future>::Output;fn left_future<B>(self) -> Either<Self, B> where B: Future<Output = Self::Output>, [src]

Important traits for Either<A, B>

ⓘImportant traits for Either<A, B>Important traits for Either<A, B>impl<A, B> Future for Either<A, B> where A: Future, B: Future<Output = <A as Future>::Output>, type Output = <A as Future>::Output;fn right_future<A>(self) -> Either<A, Self> where A: Future<Output = Self::Output>, [src]

Important traits for Either<A, B>

fn into_stream(self) -> IntoStream<Self>[src]

ⓘImportant traits for Flatten<Fut>Important traits for Flatten<Fut>impl<Fut> Future for Flatten<Fut> where Fut: Future, <Fut as Future>::Output: Future, type Output = <<Fut as Future>::Output as Future>::Output;fn flatten(self) -> Flatten<Self> where Self::Output: Future, [src]

Important traits for Flatten<Fut>

fn flatten_stream(self) -> FlattenStream<Self> where Self::Output: Stream, [src]

ⓘImportant traits for Fuse<Fut>Important traits for Fuse<Fut>impl<Fut> Future for Fuse<Fut> where Fut: Future, type Output = <Fut as Future>::Output;fn fuse(self) -> Fuse<Self>[src]

Important traits for Fuse<Fut>

ⓘImportant traits for Inspect<Fut, F>Important traits for Inspect<Fut, F>impl<Fut, F> Future for Inspect<Fut, F> where F: FnOnce(&<Fut as Future>::Output), Fut: Future, type Output = <Fut as Future>::Output;fn inspect<F>(self, f: F) -> Inspect<Self, F> where F: FnOnce(&Self::Output), [src]

Important traits for Inspect<Fut, F>

ⓘImportant traits for CatchUnwind<Fut>Important traits for CatchUnwind<Fut>impl<Fut> Future for CatchUnwind<Fut> where Fut: Future + UnwindSafe, type Output = Result<<Fut as Future>::Output, Box<dyn Any + 'static + Send>>;fn catch_unwind(self) -> CatchUnwind<Self> where Self: UnwindSafe, [src]

Important traits for CatchUnwind<Fut>

ⓘImportant traits for Shared<Fut>Important traits for Shared<Fut>impl<Fut> Future for Shared<Fut> where Fut: Future, <Fut as Future>::Output: Clone, type Output = <Fut as Future>::Output;fn shared(self) -> Shared<Self> where Self::Output: Clone, [src]

Important traits for Shared<Fut>

fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)[src]

Important traits for Pin<P>

ⓘImportant traits for Pin<P>Important 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;fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>> where Self: 'a, [src]

Important traits for Pin<P>

ⓘImportant traits for UnitError<Fut>Important traits for UnitError<Fut>impl<Fut, T> Future for UnitError<Fut> where Fut: Future<Output = T>, type Output = Result<T, ()>;fn unit_error(self) -> UnitError<Self>[src]

Important traits for UnitError<Fut>

ⓘImportant traits for NeverError<Fut>Important traits for NeverError<Fut>impl<Fut, T> Future for NeverError<Fut> where Fut: Future<Output = T>, type Output = Result<T, Infallible>;fn never_error(self) -> NeverError<Self>[src]

Important traits for NeverError<Fut>

fn poll_unpin(&mut self, cx: &mut Context) -> Poll<Self::Output> where Self: Unpin, [src]

fn now_or_never(self) -> Option<Self::Output>[src]

impl<Fut> TryFutureExt for Fut where Fut: TryFuture + ?Sized, [src]

fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where Self::Ok: Sink<Item>, <Self::Ok as Sink<Item>>::Error == Self::Error, [src]

Important traits for MapOk<Fut, F>

Important traits for MapErr<Fut, F>

ⓘImportant traits for ErrInto<Fut, E>Important traits for ErrInto<Fut, E>impl<Fut, E> Future for ErrInto<Fut, E> where Fut: TryFuture, <Fut as TryFuture>::Error: Into<E>, type Output = Result<<Fut as TryFuture>::Ok, E>;fn err_into<E>(self) -> ErrInto<Self, E> where Self::Error: Into<E>, [src]

Important traits for ErrInto<Fut, E>

Important traits for AndThen<Fut1, Fut2, F>

Important traits for OrElse<Fut1, Fut2, F>

Important traits for InspectOk<Fut, F>

Important traits for InspectErr<Fut, F>

fn try_flatten_stream(self) -> TryFlattenStream<Self> where Self::Ok: TryStream, <Self::Ok as TryStream>::Error == Self::Error, [src]

Important traits for UnwrapOrElse<Fut, F>