pub struct Distinct<S: Stream> { /* private fields */ }
Expand description
Stream for the pairwise
method.
Trait Implementations§
Source§impl<S> FusedStream for Distinct<S>
impl<S> FusedStream for Distinct<S>
Source§fn is_terminated(&self) -> bool
fn is_terminated(&self) -> bool
Returns
true
if the stream should no longer be polled.Source§impl<S> Stream for Distinct<S>
impl<S> Stream for Distinct<S>
impl<'__pin, S: Stream> Unpin for Distinct<S>where
PinnedFieldsOf<__Origin<'__pin, S>>: Unpin,
Auto Trait Implementations§
impl<S> Freeze for Distinct<S>where
S: Freeze,
impl<S> RefUnwindSafe for Distinct<S>where
S: RefUnwindSafe,
impl<S> Send for Distinct<S>where
S: Send,
impl<S> Sync for Distinct<S>where
S: Sync,
impl<S> UnwindSafe for Distinct<S>where
S: UnwindSafe,
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> RxExt for T
impl<T> RxExt for T
Source§fn race<S: Stream<Item = Self::Item>>(
self,
other: S,
) -> Race<Self, S, Self::Item>where
Self: Sized,
fn race<S: Stream<Item = Self::Item>>(
self,
other: S,
) -> Race<Self, S, Self::Item>where
Self: Sized,
Starts polling itself as well as the provided other
Stream
.
The first one to emit an event “wins” and proceeds to emit all its next events.
The “loser” is discarded and will not be polled further. Read moreSource§fn start_with<I: IntoIterator<Item = Self::Item>>(
self,
iter: I,
) -> StartWith<Self>where
Self: Sized,
fn start_with<I: IntoIterator<Item = Self::Item>>(
self,
iter: I,
) -> StartWith<Self>where
Self: Sized,
Precedes all emitted events with the items of an iter. Read more
Source§fn end_with<I: IntoIterator<Item = Self::Item>>(self, iter: I) -> EndWith<Self>where
Self: Sized,
fn end_with<I: IntoIterator<Item = Self::Item>>(self, iter: I) -> EndWith<Self>where
Self: Sized,
Follows all emitted events with the items of an iter. Read more
Transforms a
Stream
into a broadcast one, which can be subscribed to more than once, after cloning the shared version. Read moreTransforms a
Stream
into a broadcast one, which can be subscribed to more than once, after cloning the shared version. Read moreTransforms a
Stream
into a broadcast one, which can be subscribed to more than once, after cloning the shared version. Read moreSource§fn switch_map<S: Stream, F: FnMut(Self::Item) -> S>(
self,
f: F,
) -> SwitchMap<Self, S, F>where
Self: Sized,
fn switch_map<S: Stream, F: FnMut(Self::Item) -> S>(
self,
f: F,
) -> SwitchMap<Self, S, F>where
Self: Sized,
Like
flat_map
, except that switched Stream
is interrupted when the parent Stream
emits a next event. Read moreSource§fn pairwise(self) -> Pairwise<Self>where
Self: Sized,
fn pairwise(self) -> Pairwise<Self>where
Self: Sized,
Emits pairs of the previous and next events as a tuple. Read more
Source§fn debounce<Fut: Future, F: Fn(&Self::Item) -> Fut>(
self,
f: F,
) -> Debounce<Self, Fut, F>where
Self: Sized,
fn debounce<Fut: Future, F: Fn(&Self::Item) -> Fut>(
self,
f: F,
) -> Debounce<Self, Fut, F>where
Self: Sized,
Delays events using a debounce time window.
The event will emit when this window closes and when no other event
was emitted while this window was open. Read more
Source§fn throttle<Fut: Future, F: Fn(&Self::Item) -> Fut>(
self,
f: F,
) -> Throttle<Self, Fut, F>where
Self: Sized,
fn throttle<Fut: Future, F: Fn(&Self::Item) -> Fut>(
self,
f: F,
) -> Throttle<Self, Fut, F>where
Self: Sized,
Creates a new interval from the closure, whenever a new event is emitted from the parent
Stream
.
This event is immediately emitted, however for as long as the interval is now open, no
subsequent events will be emitted. Read moreSource§fn buffer<Fut: Future<Output = bool>, F: Fn(&Self::Item, usize) -> Fut>(
self,
f: F,
) -> Buffer<Self, Fut, F>where
Self: Sized,
fn buffer<Fut: Future<Output = bool>, F: Fn(&Self::Item, usize) -> Fut>(
self,
f: F,
) -> Buffer<Self, Fut, F>where
Self: Sized,
Creates chunks of buffered data. Read more
Source§fn window<Fut: Future<Output = bool>, F: Fn(&Self::Item, usize) -> Fut>(
self,
f: F,
) -> Window<Self, Fut, F>where
Self: Sized,
fn window<Fut: Future<Output = bool>, F: Fn(&Self::Item, usize) -> Fut>(
self,
f: F,
) -> Window<Self, Fut, F>where
Self: Sized,
Creates chunks of buffered data as new
Stream
s. Read moreSource§fn distinct(self) -> Distinct<Self>
fn distinct(self) -> Distinct<Self>
Ensures that all emitted events are unique.
Events are required to implement
Hash
. Read moreSource§fn distinct_until_changed(self) -> DistinctUntilChanged<Self>
fn distinct_until_changed(self) -> DistinctUntilChanged<Self>
Ensures that all emitted events are unique within immediate sequence.
Events are required to implement
Hash
. Read moreSource§fn materialize(self) -> Materialize<Self>where
Self: Sized,
fn materialize(self) -> Materialize<Self>where
Self: Sized,
Converts all events of a
Stream
into Notification
events.
When the Stream
is done, it will first emit a final Notification::Complete
event. Read moreSource§fn dematerialize<T>(self) -> Dematerialize<Self, T>
fn dematerialize<T>(self) -> Dematerialize<Self, T>
The inverse of materialize.
Use this transformer to translate a
Stream
emitting Notification
events back
into a Stream
emitting original events. Read moreSource§fn delay<Fut: Future, F: Fn() -> Fut>(self, f: F) -> Delay<Self, Fut, F>where
Self: Sized,
fn delay<Fut: Future, F: Fn() -> Fut>(self, f: F) -> Delay<Self, Fut, F>where
Self: Sized,
Delays emitting events using an initial time window, provided by a closure. Read more
Source§fn with_latest_from<S: Stream>(
self,
stream: S,
) -> CombineLatest2<Self, S, Self::Item, S::Item>
fn with_latest_from<S: Stream>( self, stream: S, ) -> CombineLatest2<Self, S, Self::Item, S::Item>
Acts just like a
CombineLatest2
, where every next event is a tuple pair
containing the last emitted events from both Stream
s. Read moreSource§impl<T> StreamExt for T
impl<T> StreamExt for T
Source§fn next(&mut self) -> Next<'_, Self>where
Self: Unpin,
fn next(&mut self) -> Next<'_, Self>where
Self: Unpin,
Creates a future that resolves to the next item in the stream. Read more
Source§fn into_future(self) -> StreamFuture<Self>
fn into_future(self) -> StreamFuture<Self>
Source§fn map<T, F>(self, f: F) -> Map<Self, F>
fn map<T, F>(self, f: F) -> Map<Self, F>
Maps this stream’s items to a different type, returning a new stream of
the resulting type. Read more
Source§fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
fn enumerate(self) -> Enumerate<Self>where
Self: Sized,
Creates a stream which gives the current iteration count as well as
the next value. Read more
Source§fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>
fn filter<Fut, F>(self, f: F) -> Filter<Self, Fut, F>
Filters the values produced by this stream according to the provided
asynchronous predicate. Read more
Source§fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>
fn filter_map<Fut, T, F>(self, f: F) -> FilterMap<Self, Fut, F>
Filters the values produced by this stream while simultaneously mapping
them to a different type according to the provided asynchronous closure. Read more
Source§fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>
Computes from this stream’s items new items of a different type using
an asynchronous closure. Read more
Source§fn collect<C>(self) -> Collect<Self, C>
fn collect<C>(self) -> Collect<Self, C>
Transforms a stream into a collection, returning a
future representing the result of that computation. Read more
Source§fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>
fn unzip<A, B, FromA, FromB>(self) -> Unzip<Self, FromA, FromB>
Converts a stream of pairs into a future, which
resolves to pair of containers. Read more
Source§fn concat(self) -> Concat<Self>
fn concat(self) -> Concat<Self>
Concatenate all items of a stream into a single extendable
destination, returning a future representing the end result. Read more
Source§fn count(self) -> Count<Self>where
Self: Sized,
fn count(self) -> Count<Self>where
Self: Sized,
Drives the stream to completion, counting the number of items. Read more
Source§fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>
fn fold<T, Fut, F>(self, init: T, f: F) -> Fold<Self, Fut, T, F>
Execute an accumulating asynchronous computation over a stream,
collecting all the values into one final result. Read more
Source§fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F>
fn any<Fut, F>(self, f: F) -> Any<Self, Fut, F>
Execute predicate over asynchronous stream, and return
true
if any element in stream satisfied a predicate. Read moreSource§fn all<Fut, F>(self, f: F) -> All<Self, Fut, F>
fn all<Fut, F>(self, f: F) -> All<Self, Fut, F>
Execute predicate over asynchronous stream, and return
true
if all element in stream satisfied a predicate. Read moreSource§fn flatten(self) -> Flatten<Self>
fn flatten(self) -> Flatten<Self>
Flattens a stream of streams into just one continuous stream. Read more
Source§fn flatten_unordered(
self,
limit: impl Into<Option<usize>>,
) -> FlattenUnorderedWithFlowController<Self, ()>
fn flatten_unordered( self, limit: impl Into<Option<usize>>, ) -> FlattenUnorderedWithFlowController<Self, ()>
Flattens a stream of streams into just one continuous stream. Polls
inner streams produced by the base stream concurrently. Read more
Source§fn flat_map_unordered<U, F>(
self,
limit: impl Into<Option<usize>>,
f: F,
) -> FlatMapUnordered<Self, U, F>
fn flat_map_unordered<U, F>( self, limit: impl Into<Option<usize>>, f: F, ) -> FlatMapUnordered<Self, U, F>
Maps a stream like
StreamExt::map
but flattens nested Stream
s
and polls them concurrently, yielding items in any order, as they made
available. Read moreSource§fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>
fn scan<S, B, Fut, F>(self, initial_state: S, f: F) -> Scan<Self, S, Fut, F>
Combinator similar to
StreamExt::fold
that holds internal state
and produces a new stream. Read moreSource§fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>
fn skip_while<Fut, F>(self, f: F) -> SkipWhile<Self, Fut, F>
Skip elements on this stream while the provided asynchronous predicate
resolves to
true
. Read moreSource§fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>
fn take_while<Fut, F>(self, f: F) -> TakeWhile<Self, Fut, F>
Take elements from this stream while the provided asynchronous predicate
resolves to
true
. Read moreSource§fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>
fn take_until<Fut>(self, fut: Fut) -> TakeUntil<Self, Fut>
Take elements from this stream until the provided future resolves. Read more
Source§fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>
fn for_each<Fut, F>(self, f: F) -> ForEach<Self, Fut, F>
Runs this stream to completion, executing the provided asynchronous
closure for each element on the stream. Read more
Source§fn for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F,
) -> ForEachConcurrent<Self, Fut, F>
fn for_each_concurrent<Fut, F>( self, limit: impl Into<Option<usize>>, f: F, ) -> ForEachConcurrent<Self, Fut, F>
Runs this stream to completion, executing the provided asynchronous
closure for each element on the stream concurrently as elements become
available. Read more
Source§fn take(self, n: usize) -> Take<Self>where
Self: Sized,
fn take(self, n: usize) -> Take<Self>where
Self: Sized,
Creates a new stream of at most
n
items of the underlying stream. Read moreSource§fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
fn skip(self, n: usize) -> Skip<Self>where
Self: Sized,
Creates a new stream which skips
n
items of the underlying stream. Read moreSource§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 stream. Read more
Source§fn boxed<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a>>
fn boxed<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + Send + 'a>>
Wrap the stream in a Box, pinning it. Read more
Source§fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a>>where
Self: Sized + 'a,
fn boxed_local<'a>(self) -> Pin<Box<dyn Stream<Item = Self::Item> + 'a>>where
Self: Sized + 'a,
Wrap the stream in a Box, pinning it. Read more
Source§fn buffered(self, n: usize) -> Buffered<Self>
fn buffered(self, n: usize) -> Buffered<Self>
An adaptor for creating a buffered list of pending futures. Read more
Source§fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>
fn buffer_unordered(self, n: usize) -> BufferUnordered<Self>
An adaptor for creating a buffered list of pending futures (unordered). Read more
Source§fn zip<St>(self, other: St) -> Zip<Self, St>
fn zip<St>(self, other: St) -> Zip<Self, St>
An adapter for zipping two streams together. Read more
Source§fn peekable(self) -> Peekable<Self>where
Self: Sized,
fn peekable(self) -> Peekable<Self>where
Self: Sized,
Creates a new stream which exposes a
peek
method. Read moreSource§fn chunks(self, capacity: usize) -> Chunks<Self>where
Self: Sized,
fn chunks(self, capacity: usize) -> Chunks<Self>where
Self: Sized,
An adaptor for chunking up items of the stream inside a vector. Read more
Source§fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where
Self: Sized,
fn ready_chunks(self, capacity: usize) -> ReadyChunks<Self>where
Self: Sized,
An adaptor for chunking up ready items of the stream inside a vector. Read more
Source§fn forward<S>(self, sink: S) -> Forward<Self, S>
fn forward<S>(self, sink: S) -> Forward<Self, S>
A future that completes after the given stream has been fully processed
into the sink and the sink has been flushed and closed. Read more
Source§fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)
fn split<Item>(self) -> (SplitSink<Self, Item>, SplitStream<Self>)
Source§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
Do something with each item of this stream, afterwards passing it on. Read more
Source§fn left_stream<B>(self) -> Either<Self, B>
fn left_stream<B>(self) -> Either<Self, B>
Source§fn right_stream<B>(self) -> Either<B, Self>
fn right_stream<B>(self) -> Either<B, Self>
Source§fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,
fn poll_next_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Option<Self::Item>>where
Self: Unpin,
A convenience method for calling
Stream::poll_next
on Unpin
stream types.Source§fn select_next_some(&mut self) -> SelectNextSome<'_, Self>where
Self: Unpin + FusedStream,
fn select_next_some(&mut self) -> SelectNextSome<'_, Self>where
Self: Unpin + FusedStream,
Source§impl<S> TryStreamExt for S
impl<S> TryStreamExt for S
Source§fn err_into<E>(self) -> ErrInto<Self, E>
fn err_into<E>(self) -> ErrInto<Self, E>
Wraps the current stream in a new stream which converts the error type
into the one provided. Read more
Source§fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>
Wraps the current stream in a new stream which maps the success value
using the provided closure. Read more
Source§fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
Wraps the current stream in a new stream which maps the error value
using the provided closure. Read more
Source§fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>
Chain on a computation for when a value is ready, passing the successful
results to the provided closure
f
. Read moreSource§fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>
Chain on a computation for when an error happens, passing the
erroneous result to the provided closure
f
. Read moreSource§fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>
Do something with the success value of this stream, afterwards passing
it on. Read more
Source§fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>
Do something with the error value of this stream, afterwards passing it on. Read more
Source§fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
Source§fn try_next(&mut self) -> TryNext<'_, Self>where
Self: Unpin,
fn try_next(&mut self) -> TryNext<'_, Self>where
Self: Unpin,
Creates a future that attempts to resolve the next item in the stream.
If an error is encountered before the next item, the error is returned
instead. Read more
Source§fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>
fn try_for_each<Fut, F>(self, f: F) -> TryForEach<Self, Fut, F>
Attempts to run this stream to completion, executing the provided
asynchronous closure for each element on the stream. Read more
Source§fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F>
fn try_skip_while<Fut, F>(self, f: F) -> TrySkipWhile<Self, Fut, F>
Skip elements on this stream while the provided asynchronous predicate
resolves to
true
. Read moreSource§fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F>
fn try_take_while<Fut, F>(self, f: F) -> TryTakeWhile<Self, Fut, F>
Take elements on this stream while the provided asynchronous predicate
resolves to
true
. Read moreSource§fn try_for_each_concurrent<Fut, F>(
self,
limit: impl Into<Option<usize>>,
f: F,
) -> TryForEachConcurrent<Self, Fut, F>
fn try_for_each_concurrent<Fut, F>( self, limit: impl Into<Option<usize>>, f: F, ) -> TryForEachConcurrent<Self, Fut, F>
Attempts to run this stream to completion, executing the provided asynchronous
closure for each element on the stream concurrently as elements become
available, exiting as soon as an error occurs. Read more
Source§fn try_collect<C>(self) -> TryCollect<Self, C>
fn try_collect<C>(self) -> TryCollect<Self, C>
Attempt to transform a stream into a collection,
returning a future representing the result of that computation. Read more
Source§fn try_chunks(self, capacity: usize) -> TryChunks<Self>where
Self: Sized,
fn try_chunks(self, capacity: usize) -> TryChunks<Self>where
Self: Sized,
An adaptor for chunking up successful items of the stream inside a vector. Read more
Source§fn try_ready_chunks(self, capacity: usize) -> TryReadyChunks<Self>where
Self: Sized,
fn try_ready_chunks(self, capacity: usize) -> TryReadyChunks<Self>where
Self: Sized,
An adaptor for chunking up successful, ready items of the stream inside a vector. Read more
Source§fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>
fn try_filter<Fut, F>(self, f: F) -> TryFilter<Self, Fut, F>
Attempt to filter the values produced by this stream according to the
provided asynchronous closure. Read more
Source§fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>
fn try_filter_map<Fut, F, T>(self, f: F) -> TryFilterMap<Self, Fut, F>
Attempt to filter the values produced by this stream while
simultaneously mapping them to a different type according to the
provided asynchronous closure. Read more
Source§fn try_flatten_unordered(
self,
limit: impl Into<Option<usize>>,
) -> TryFlattenUnordered<Self>
fn try_flatten_unordered( self, limit: impl Into<Option<usize>>, ) -> TryFlattenUnordered<Self>
Flattens a stream of streams into just one continuous stream. Produced streams
will be polled concurrently and any errors will be passed through without looking at them.
If the underlying base stream returns an error, it will be immediately propagated. Read more
Source§fn try_flatten(self) -> TryFlatten<Self>
fn try_flatten(self) -> TryFlatten<Self>
Flattens a stream of streams into just one continuous stream. Read more
Source§fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F>
fn try_fold<T, Fut, F>(self, init: T, f: F) -> TryFold<Self, Fut, T, F>
Attempt to execute an accumulating asynchronous computation over a
stream, collecting all the values into one final result. Read more
Source§fn try_concat(self) -> TryConcat<Self>
fn try_concat(self) -> TryConcat<Self>
Attempt to concatenate all items of a stream into a single
extendable destination, returning a future representing the end result. Read more
Source§fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>
fn try_buffer_unordered(self, n: usize) -> TryBufferUnordered<Self>
Attempt to execute several futures from a stream concurrently (unordered). Read more
Source§fn try_buffered(self, n: usize) -> TryBuffered<Self>
fn try_buffered(self, n: usize) -> TryBuffered<Self>
Attempt to execute several futures from a stream concurrently. Read more
Source§fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>,
) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
Self: Unpin,
fn try_poll_next_unpin(
&mut self,
cx: &mut Context<'_>,
) -> Poll<Option<Result<Self::Ok, Self::Error>>>where
Self: Unpin,
A convenience method for calling
TryStream::try_poll_next
on Unpin
stream types.Source§fn into_async_read(self) -> IntoAsyncRead<Self>
fn into_async_read(self) -> IntoAsyncRead<Self>
Adapter that converts this stream into an
AsyncBufRead
. Read moreSource§fn try_all<Fut, F>(self, f: F) -> TryAll<Self, Fut, F>
fn try_all<Fut, F>(self, f: F) -> TryAll<Self, Fut, F>
Attempt to execute a predicate over an asynchronous stream and evaluate if all items
satisfy the predicate. Exits early if an
Err
is encountered or if an Ok
item is found
that does not satisfy the predicate. Read more