Struct futures_util::stream::Peek
source · pub struct Peek<'a, St: Stream> { /* private fields */ }Expand description
Future for the Peekable::peek method.
Trait Implementations§
source§impl<St: Stream> FusedFuture for Peek<'_, St>
impl<St: Stream> FusedFuture for Peek<'_, St>
source§fn is_terminated(&self) -> bool
fn is_terminated(&self) -> bool
Returns
true if the underlying future should no longer be polled.impl<'__pin, 'a, St: Stream> Unpin for Peek<'a, St>where __Origin<'__pin, 'a, St>: Unpin,
Auto Trait Implementations§
impl<'a, St> RefUnwindSafe for Peek<'a, St>where St: RefUnwindSafe, <St as Stream>::Item: RefUnwindSafe,
impl<'a, St> Send for Peek<'a, St>where St: Send, <St as Stream>::Item: Send,
impl<'a, St> Sync for Peek<'a, St>where St: Sync, <St as Stream>::Item: Sync,
impl<'a, St> !UnwindSafe for Peek<'a, St>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> FutureExt for Twhere
T: Future + ?Sized,
impl<T> FutureExt for Twhere T: Future + ?Sized,
source§fn map<U, F>(self, f: F) -> Map<Self, F> ⓘwhere
F: FnOnce(Self::Output) -> U,
Self: Sized,
fn map<U, F>(self, f: F) -> Map<Self, F> ⓘwhere F: FnOnce(Self::Output) -> U, Self: Sized,
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
source§fn map_into<U>(self) -> MapInto<Self, U> ⓘwhere
Self::Output: Into<U>,
Self: Sized,
fn map_into<U>(self) -> MapInto<Self, U> ⓘwhere Self::Output: Into<U>, Self: Sized,
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
source§fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> ⓘwhere
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
Self: Sized,
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> ⓘwhere F: FnOnce(Self::Output) -> Fut, Fut: Future, Self: Sized,
Chain on a computation for when a future finished, passing the result of
the future to the provided closure
f. Read moresource§fn left_future<B>(self) -> Either<Self, B> ⓘwhere
B: Future<Output = Self::Output>,
Self: Sized,
fn left_future<B>(self) -> Either<Self, B> ⓘwhere B: Future<Output = Self::Output>, Self: Sized,
source§fn right_future<A>(self) -> Either<A, Self> ⓘwhere
A: Future<Output = Self::Output>,
Self: Sized,
fn right_future<A>(self) -> Either<A, Self> ⓘwhere A: Future<Output = Self::Output>, Self: Sized,
source§fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
fn into_stream(self) -> IntoStream<Self>where Self: Sized,
Convert this future into a single element stream. Read more
source§fn flatten(self) -> Flatten<Self> ⓘwhere
Self::Output: Future,
Self: Sized,
fn flatten(self) -> Flatten<Self> ⓘwhere Self::Output: Future, Self: Sized,
Flatten the execution of this future when the output of this
future is itself another future. Read more
source§fn flatten_stream(self) -> FlattenStream<Self>where
Self::Output: Stream,
Self: Sized,
fn flatten_stream(self) -> FlattenStream<Self>where Self::Output: Stream, Self: Sized,
Flatten the execution of this future when the successful result of this
future is a stream. Read more
source§fn fuse(self) -> Fuse<Self> ⓘwhere
Self: Sized,
fn fuse(self) -> Fuse<Self> ⓘwhere Self: Sized,
Fuse a future such that
poll will never again be called once it has
completed. This method can be used to turn any Future into a
FusedFuture. Read moresource§fn inspect<F>(self, f: F) -> Inspect<Self, F> ⓘwhere
F: FnOnce(&Self::Output),
Self: Sized,
fn inspect<F>(self, f: F) -> Inspect<Self, F> ⓘwhere F: FnOnce(&Self::Output), Self: Sized,
Do something with the output of a future before passing it on. Read more
source§fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere
Self: Sized + UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self> ⓘwhere Self: Sized + UnwindSafe,
Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve
to the same result. Read more
source§fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where
Self: Sized,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where Self: Sized,
Turn this future into a future that yields
() on completion and sends
its output to another future on a separate task. Read moresource§fn boxed<'a>(self) -> BoxFuture<'a, Self::Output>where
Self: Sized + Send + 'a,
fn boxed<'a>(self) -> BoxFuture<'a, Self::Output>where Self: Sized + Send + 'a,
Wrap the future in a Box, pinning it. Read more
source§fn boxed_local<'a>(self) -> LocalBoxFuture<'a, Self::Output>where
Self: Sized + 'a,
fn boxed_local<'a>(self) -> LocalBoxFuture<'a, Self::Output>where Self: Sized + 'a,
Wrap the future in a Box, pinning it. Read more
source§fn unit_error(self) -> UnitError<Self> ⓘwhere
Self: Sized,
fn unit_error(self) -> UnitError<Self> ⓘwhere Self: Sized,
Turns a
Future<Output = T> into a
TryFuture<Ok = T, Error = ()>.source§fn never_error(self) -> NeverError<Self> ⓘwhere
Self: Sized,
fn never_error(self) -> NeverError<Self> ⓘwhere Self: Sized,
Turns a
Future<Output = T> into a
TryFuture<Ok = T, Error = Never>.source§impl<F> IntoFuture for Fwhere
F: Future,
impl<F> IntoFuture for Fwhere F: Future,
§type IntoFuture = F
type IntoFuture = F
Which kind of future are we turning this into?
source§fn into_future(self) -> <F as IntoFuture>::IntoFuture
fn into_future(self) -> <F as IntoFuture>::IntoFuture
Creates a future from a value. Read more