Trait drone_core::prelude::Stream [−] [src]

pub trait Stream {
    type Item;
    type Error;
    fn poll(&mut self) -> Result<Async<Option<Self::Item>>, Self::Error>;

    fn into_future(self) -> StreamFuture<Self> { ... }

    fn map<U, F>(self, f: F) -> Map<Self, F>
    where
        F: FnMut(Self::Item) -> U,
    { ... }

    fn map_err<U, F>(self, f: F) -> MapErr<Self, F>
    where
        F: FnMut(Self::Error) -> U,
    { ... }

    fn filter<F>(self, f: F) -> Filter<Self, F>
    where
        F: FnMut(&Self::Item) -> bool,
    { ... }

    fn filter_map<F, B>(self, f: F) -> FilterMap<Self, F>
    where
        F: FnMut(Self::Item) -> Option<B>,
    { ... }

    fn then<F, U>(self, f: F) -> Then<Self, F, U>
    where
        F: FnMut(Result<Self::Item, Self::Error>) -> U,
        U: IntoFuture,
    { ... }

    fn and_then<F, U>(self, f: F) -> AndThen<Self, F, U>
    where
        F: FnMut(Self::Item) -> U,
        U: IntoFuture<Error = Self::Error>,
    { ... }

    fn or_else<F, U>(self, f: F) -> OrElse<Self, F, U>
    where
        F: FnMut(Self::Error) -> U,
        U: IntoFuture<Item = Self::Item>,
    { ... }

    fn concat2(self) -> Concat2<Self>
    where
        Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
        Self::Item: IntoIterator,
        Self::Item: Default,
    { ... }

    fn concat(self) -> Concat<Self>
    where
        Self::Item: Extend<<Self::Item as IntoIterator>::Item>,
        Self::Item: IntoIterator,
    { ... }

    fn fold<F, T, Fut>(self, init: T, f: F) -> Fold<Self, F, Fut, T>
    where
        F: FnMut(T, Self::Item) -> Fut,
        Fut: IntoFuture<Item = T>,
        Self::Error: From<<Fut as IntoFuture>::Error>,
    { ... }

    fn flatten(self) -> Flatten<Self>
    where
        Self::Item: Stream,
        <Self::Item as Stream>::Error: From<Self::Error>,
    { ... }

    fn skip_while<P, R>(self, pred: P) -> SkipWhile<Self, P, R>
    where
        P: FnMut(&Self::Item) -> R,
        R: IntoFuture<Item = bool, Error = Self::Error>,
    { ... }

    fn take_while<P, R>(self, pred: P) -> TakeWhile<Self, P, R>
    where
        P: FnMut(&Self::Item) -> R,
        R: IntoFuture<Item = bool, Error = Self::Error>,
    { ... }

    fn for_each<F, U>(self, f: F) -> ForEach<Self, F, U>
    where
        F: FnMut(Self::Item) -> U,
        U: IntoFuture<Item = (), Error = Self::Error>,
    { ... }

    fn from_err<E>(self) -> FromErr<Self, E>
    where
        E: From<Self::Error>,
    { ... }

    fn take(self, amt: u64) -> Take<Self> { ... }

    fn skip(self, amt: u64) -> Skip<Self> { ... }

    fn fuse(self) -> Fuse<Self> { ... }

    fn by_ref(&mut self) -> &mut Self { ... }

    fn merge<S>(self, other: S) -> Merge<Self, S>
    where
        S: Stream<Error = Self::Error>,
    { ... }

    fn zip<S>(self, other: S) -> Zip<Self, S>
    where
        S: Stream<Error = Self::Error>,
    { ... }

    fn chain<S>(self, other: S) -> Chain<Self, S>
    where
        S: Stream<Item = Self::Item, Error = Self::Error>,
    { ... }

    fn peekable(self) -> Peekable<Self> { ... }

    fn select<S>(self, other: S) -> Select<Self, S>
    where
        S: Stream<Item = Self::Item, Error = Self::Error>,
    { ... }

    fn forward<S>(self, sink: S) -> Forward<Self, S>
    where
        S: Sink<SinkItem = Self::Item>,
        Self::Error: From<<S as Sink>::SinkError>,
    { ... }

    fn inspect<F>(self, f: F) -> Inspect<Self, F>
    where
        F: FnMut(&Self::Item) -> (),
    { ... }
}

A stream of values, not all of which may have been produced yet.

Stream is a trait to represent any source of sequential events or items which acts like an iterator but long periods of time may pass between items. Like Future the methods of Stream never block and it is thus suitable for programming in an asynchronous fashion. This trait is very similar to the Iterator trait in the standard library where Some is used to signal elements of the stream and None is used to indicate that the stream is finished.

Like futures a stream has basic combinators to transform the stream, perform more work on each item, etc.

You can find more information/tutorials about streams online at https://tokio.rs

Streams as Futures

Any instance of Stream can also be viewed as a Future where the resolved value is the next item in the stream along with the rest of the stream. The into_future adaptor can be used here to convert any stream into a future for use with other future methods like join and select.

Errors

Streams, like futures, can also model errors in their computation. All streams have an associated Error type like with futures. Currently as of the 0.1 release of this library an error on a stream does not terminate the stream. That is, after one error is received, another error may be received from the same stream (it's valid to keep polling).

This property of streams, however, is being considered for change in 0.2 where an error on a stream is similar to None, it terminates the stream entirely. If one of these use cases suits you perfectly and not the other, please feel welcome to comment on the issue!

Associated Types

The type of item this stream will yield on success.

The type of error this stream may generate.

Required Methods

Attempt to pull out the next value of this stream, returning None if the stream is finished.

This method, like Future::poll, is the sole method of pulling out a value from a stream. This method must also be run within the context of a task typically and implementors of this trait must ensure that implementations of this method do not block, as it may cause consumers to behave badly.

Return value

If NotReady is returned then this stream's next value is not ready yet and implementations will ensure that the current task will be notified when the next value may be ready. If Some is returned then the returned value represents the next value on the stream. Err indicates an error happened, while Ok indicates whether there was a new item on the stream or whether the stream has terminated.

Panics

Once a stream is finished, that is Ready(None) has been returned, further calls to poll may result in a panic or other "bad behavior". If this is difficult to guard against then the fuse adapter can be used to ensure that poll always has well-defined semantics.

Provided Methods

Converts this stream into a Future.

A stream can be viewed as a future which will resolve to a pair containing the next element of the stream plus the remaining stream. If the stream terminates, then the next element is None and the remaining stream is still passed back, to allow reclamation of its resources.

The returned future can be used to compose streams and futures together by placing everything into the "world of futures".

Converts a stream of type T to a stream of type U.

The provided closure is executed over all elements of this stream as they are made available, and the callback will be executed inline with calls to poll.

Note that this function consumes the receiving stream and returns a wrapped version of it, similar to the existing map methods in the standard library.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);
let rx = rx.map(|x| x + 3);

Converts a stream of error type T to a stream of error type U.

The provided closure is executed over all errors of this stream as they are made available, and the callback will be executed inline with calls to poll.

Note that this function consumes the receiving stream and returns a wrapped version of it, similar to the existing map_err methods in the standard library.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);
let rx = rx.map_err(|()| 3);

Filters the values produced by this stream according to the provided predicate.

As values of this stream are made available, the provided predicate will be run against them. If the predicate returns true then the stream will yield the value, but if the predicate returns false then the value will be discarded and the next value will be produced.

All errors are passed through without filtering in this combinator.

Note that this function consumes the receiving stream and returns a wrapped version of it, similar to the existing filter methods in the standard library.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);
let evens = rx.filter(|x| x % 2 == 0);

Filters the values produced by this stream while simultaneously mapping them to a different type.

As values of this stream are made available, the provided function will be run on them. If the predicate returns Some(e) then the stream will yield the value e, but if the predicate returns None then the next value will be produced.

All errors are passed through without filtering in this combinator.

Note that this function consumes the receiving stream and returns a wrapped version of it, similar to the existing filter_map methods in the standard library.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);
let evens_plus_one = rx.filter_map(|x| {
    if x % 0 == 2 {
        Some(x + 1)
    } else {
        None
    }
});

Chain on a computation for when a value is ready, passing the resulting item to the provided closure f.

This function can be used to ensure a computation runs regardless of the next value on the stream. The closure provided will be yielded a Result once a value is ready, and the returned future will then be run to completion to produce the next value on this stream.

The returned value of the closure must implement the IntoFuture trait and can represent some more work to be done before the composed stream is finished. Note that the Result type implements the IntoFuture trait so it is possible to simply alter the Result yielded to the closure and return it.

Note that this function consumes the receiving stream and returns a wrapped version of it.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);

let rx = rx.then(|result| {
    match result {
        Ok(e) => Ok(e + 3),
        Err(()) => Err(4),
    }
});

Chain on a computation for when a value is ready, passing the successful results to the provided closure f.

This function can be used to run a unit of work when the next successful value on a stream is ready. The closure provided will be yielded a value when ready, and the returned future will then be run to completion to produce the next value on this stream.

Any errors produced by this stream will not be passed to the closure, and will be passed through.

The returned value of the closure must implement the IntoFuture trait and can represent some more work to be done before the composed stream is finished. Note that the Result type implements the IntoFuture trait so it is possible to simply alter the Result yielded to the closure and return it.

Note that this function consumes the receiving stream and returns a wrapped version of it.

To process the entire stream and return a single future representing success or error, use for_each instead.

Examples

use futures::prelude::*;
use futures::sync::mpsc;

let (_tx, rx) = mpsc::channel::<i32>(1);

let rx = rx.and_then(|result| {
    if result % 2 == 0 {
        Ok(result)
    } else {
        Err(())
    }
});

Chain on a computation for when an error happens, passing the erroneous result to the provided closure f.

This function can be used to run a unit of work and attempt to recover from an error if one happens. The closure provided will be yielded an error when one appears, and the returned future will then be run to completion to produce the next value on this stream.

Any successful values produced by this stream will not be passed to the closure, and will be passed through.

The returned value of the closure must implement the IntoFuture trait and can represent some more work to be done before the composed stream is finished. Note that the Result type implements the IntoFuture trait so it is possible to simply alter the Result yielded to the closure and return it.

Note that this function consumes the receiving stream and returns a wrapped version of it.

Concatenate all results of a stream into a single extendable destination, returning a future representing the end result.

This combinator will extend the first item with the contents of all the successful results of the stream. If the stream is empty, the default value will be returned. If an error occurs, all the results will be dropped and the error will be returned.

The name concat2 is an intermediate measure until the release of futures 0.2, at which point it will be renamed back to concat.

Examples

use std::thread;

use futures::prelude::*;
use futures::sync::mpsc;

let (mut tx, rx) = mpsc::channel(1);

thread::spawn(move || {
    for i in (0..3).rev() {
        let n = i * 3;
        tx = tx.send(vec![n + 1, n + 2, n + 3]).wait().unwrap();
    }
});
let result = rx.concat2();
assert_eq!(result.wait(), Ok(vec![7, 8, 9, 4, 5, 6, 1, 2, 3]));

Deprecated since 0.1.14

: please use Stream::concat2 instead

Concatenate all results of a stream into a single extendable destination, returning a future representing the end result.

This combinator will extend the first item with the contents of all the successful results of the stream. If an error occurs, all the results will be dropped and the error will be returned.

Examples

use std::thread;

use futures::prelude::*;
use futures::sync::mpsc;

let (mut tx, rx) = mpsc::channel(1);

thread::spawn(move || {
    for i in (0..3).rev() {
        let n = i * 3;
        tx = tx.send(vec![n + 1, n + 2, n + 3]).wait().unwrap();
    }
});
let result = rx.concat();
assert_eq!(result.wait(), Ok(vec![7, 8, 9, 4, 5, 6, 1, 2, 3]));

Panics

It's important to note that this function will panic if the stream is empty, which is the reason for its deprecation.

Execute an accumulating computation over a stream, collecting all the values into one final result.

This combinator will collect all successful results of this stream according to the closure provided. The initial state is also provided to this method and then is returned again by each execution of the closure. Once the entire stream has been exhausted the returned future will resolve to this value.

If an error happens then collected state will be dropped and the error will be returned.

Examples

use futures::prelude::*;
use futures::stream;
use futures::future;

let number_stream = stream::iter::<_, _, ()>((0..6).map(Ok));
let sum = number_stream.fold(0, |acc, x| future::ok(acc + x));
assert_eq!(sum.wait(), Ok(15));

Flattens a stream of streams into just one continuous stream.

If this stream's elements are themselves streams then this combinator will flatten out the entire stream to one long chain of elements. Any errors are passed through without looking at them, but otherwise each individual stream will get exhausted before moving on to the next.

use std::thread;

use futures::prelude::*;
use futures::sync::mpsc;

let (tx1, rx1) = mpsc::channel::<i32>(1);
let (tx2, rx2) = mpsc::channel::<i32>(1);
let (tx3, rx3) = mpsc::channel(1);

thread::spawn(|| {
    tx1.send(1).wait().unwrap()
       .send(2).wait().unwrap();
});
thread::spawn(|| {
    tx2.send(3).wait().unwrap()
       .send(4).wait().unwrap();
});
thread::spawn(|| {
    tx3.send(rx1).wait().unwrap()
       .send(rx2).wait().unwrap();
});

let mut result = rx3.flatten().collect();
assert_eq!(result.wait(), Ok(vec![1, 2, 3, 4]));

Skip elements on this stream while the predicate provided resolves to true.

This function, like Iterator::skip_while, will skip elements on the stream until the predicate resolves to false. Once one element returns false all future elements will be returned from the underlying stream.

Take elements from this stream while the predicate provided resolves to true.

This function, like Iterator::take_while, will take elements from the stream until the predicate resolves to false. Once one element returns false it will always return that the stream is done.

Runs this stream to completion, executing the provided closure for each element on the stream.

The closure provided will be called for each item this stream resolves to successfully, producing a future. That future will then be executed to completion before moving on to the next item.

The returned value is a Future where the Item type is () and errors are otherwise threaded through. Any error on the stream or in the closure will cause iteration to be halted immediately and the future will resolve to that error.

To process each item in the stream and produce another stream instead of a single future, use and_then instead.

Map this stream's error to any error implementing From for this stream's Error, returning a new stream.

This function does for streams what try! does for Result, by letting the compiler infer the type of the resulting error. Just as map_err above, this is useful for example to ensure that streams have the same error type when used with combinators.

Note that this function consumes the receiving stream and returns a wrapped version of it.

Creates a new stream of at most amt items of the underlying stream.

Once amt items have been yielded from this stream then it will always return that the stream is done.

Errors

Any errors yielded from underlying stream, before the desired amount of items is reached, are passed through and do not affect the total number of items taken.

Creates a new stream which skips amt items of the underlying stream.

Once amt items have been skipped from this stream then it will always return the remaining items on this stream.

Errors

All errors yielded from underlying stream are passed through and do not affect the total number of items skipped.

Fuse a stream such that poll will never again be called once it has finished.

Currently once a stream has returned None from poll any further calls could exhibit bad behavior such as block forever, panic, never return, etc. If it is known that poll may be called after stream has already finished, then this method can be used to ensure that it has defined semantics.

Once a stream has been fused and it finishes, then it will forever return None from poll. This, unlike for the traits poll method, is guaranteed.

Also note that as soon as this stream returns None it will be dropped to reclaim resources associated with it.

Borrows a stream, rather than consuming it.

This is useful to allow applying stream adaptors while still retaining ownership of the original stream.

use futures::prelude::*;
use futures::stream;
use futures::future;

let mut stream = stream::iter_ok::<_, ()>(1..5);

let sum = stream.by_ref().take(2).fold(0, |a, b| future::ok(a + b)).wait();
assert_eq!(sum, Ok(3));

// You can use the stream again
let sum = stream.take(2).fold(0, |a, b| future::ok(a + b)).wait();
assert_eq!(sum, Ok(7));

Deprecated

: functionality provided by select now

An adapter for merging the output of two streams.

The merged stream produces items from one or both of the underlying streams as they become available. Errors, however, are not merged: you get at most one error at a time.

An adapter for zipping two streams together.

The zipped stream waits for both streams to produce an item, and then returns that pair. If an error happens, then that error will be returned immediately. If either stream ends then the zipped stream will also end.

Adapter for chaining two stream.

The resulting stream emits elements from the first stream, and when first stream reaches the end, emits the elements from the second stream.

use futures::prelude::*;
use futures::stream;

let stream1 = stream::iter(vec![Ok(10), Err(false)]);
let stream2 = stream::iter(vec![Err(true), Ok(20)]);
let mut chain = stream1.chain(stream2).wait();

assert_eq!(Some(Ok(10)), chain.next());
assert_eq!(Some(Err(false)), chain.next());
assert_eq!(Some(Err(true)), chain.next());
assert_eq!(Some(Ok(20)), chain.next());
assert_eq!(None, chain.next());

Creates a new stream which exposes a peek method.

Calling peek returns a reference to the next item in the stream.

Creates a stream that selects the next element from either this stream or the provided one, whichever is ready first.

This combinator will attempt to pull items from both streams. Each stream will be polled in a round-robin fashion, and whenever a stream is ready to yield an item that item is yielded.

The select function is similar to merge except that it requires both streams to have the same item and error types.

Error are passed through from either stream.

A future that completes after the given stream has been fully processed into the sink, including flushing.

This future will drive the stream to keep producing items until it is exhausted, sending each item to the sink. It will complete once both the stream is exhausted, and the sink has fully processed received item, flushed successfully, and closed successfully.

Doing stream.forward(sink) is roughly equivalent to sink.send_all(stream). The returned future will exhaust all items from self, sending them all to sink. Furthermore the sink will be closed and flushed.

On completion, the pair (stream, sink) is returned.

Do something with each item of this stream, afterwards passing it on.

This is similar to the Iterator::inspect method in the standard library where it allows easily inspecting each value as it passes through the stream, for example to debug what's going.

Implementations on Foreign Types

impl<I, T, E> Stream for IterResult<I> where
    I: Iterator<Item = Result<T, E>>, 
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Deprecated since 0.1.14

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Deprecated

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impl<T, E> Stream for Once<T, E>
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Deprecated since 0.1.14

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Deprecated

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impl<S, P, R> Stream for SkipWhile<S, P, R> where
    P: FnMut(&<S as Stream>::Item) -> R,
    R: IntoFuture<Item = bool, Error = <S as Stream>::Error>,
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S, F, U> Stream for MapErr<S, F> where
    F: FnMut(<S as Stream>::Error) -> U,
    S: Stream, 
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Deprecated since 0.1.14

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Deprecated

: functionality provided by select now

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impl<S, F, U> Stream for Then<S, F, U> where
    F: FnMut(Result<<S as Stream>::Item, <S as Stream>::Error>) -> U,
    S: Stream,
    U: IntoFuture, 
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Deprecated since 0.1.14

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Deprecated

: functionality provided by select now

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impl<S> Stream for Skip<S> where
    S: Stream, 
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Deprecated

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impl<T, F, Fut, It> Stream for Unfold<T, F, Fut> where
    F: FnMut(T) -> Option<Fut>,
    Fut: IntoFuture<Item = (It, T)>, 
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Deprecated

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impl<S, U, F, St> Stream for WithFlatMap<S, U, F, St> where
    F: FnMut(U) -> St,
    S: Stream + Sink,
    St: Stream<Item = <S as Sink>::SinkItem, Error = <S as Sink>::SinkError>, 
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Deprecated

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impl<S, E> Stream for SinkFromErr<S, E> where
    S: Stream, 
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impl<S, F, U> Stream for Map<S, F> where
    F: FnMut(<S as Stream>::Item) -> U,
    S: Stream, 
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Deprecated since 0.1.14

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Deprecated

: functionality provided by select now

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impl<S, U, F, Fut> Stream for With<S, U, F, Fut> where
    F: FnMut(U) -> Fut,
    Fut: IntoFuture,
    S: Stream + Sink, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S, F> Stream for Filter<S, F> where
    F: FnMut(&<S as Stream>::Item) -> bool,
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S, F, B> Stream for FilterMap<S, F> where
    F: FnMut(<S as Stream>::Item) -> Option<B>,
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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Deprecated

: functionality provided by select now

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impl<T, E> Stream for Repeat<T, E> where
    T: Clone, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<F> Stream for IntoStream<F> where
    F: Future, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S> Stream for Fuse<S> where
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S, P, R> Stream for TakeWhile<S, P, R> where
    P: FnMut(&<S as Stream>::Item) -> R,
    R: IntoFuture<Item = bool, Error = <S as Stream>::Error>,
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S, F> Stream for Inspect<S, F> where
    F: FnMut(&<S as Stream>::Item) -> (),
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<T, E> Stream for Empty<T, E>
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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Deprecated

: functionality provided by select now

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impl<S1, S2> Stream for Merge<S1, S2> where
    S1: Stream,
    S2: Stream<Error = <S1 as Stream>::Error>, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<F> Stream for FlattenStream<F> where
    F: Future,
    <F as Future>::Item: Stream,
    <<F as Future>::Item as Stream>::Error == <F as Future>::Error, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

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Deprecated

: functionality provided by select now

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impl<S> Stream for Flatten<S> where
    S: Stream,
    <S as Stream>::Item: Stream,
    <<S as Stream>::Item as Stream>::Error: From<<S as Stream>::Error>, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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Deprecated

: functionality provided by select now

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impl<S> Stream for Take<S> where
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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Deprecated

: functionality provided by select now

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impl<T, E, F> Stream for PollFn<F> where
    F: FnMut() -> Result<Async<Option<T>>, E>, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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[src]

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Deprecated

: functionality provided by select now

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impl<S1, S2> Stream for Select<S1, S2> where
    S1: Stream,
    S2: Stream<Item = <S1 as Stream>::Item, Error = <S1 as Stream>::Error>, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

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impl<S> Stream for Peekable<S> where
    S: Stream, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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Deprecated

: functionality provided by select now

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impl<S1, S2> Stream for Zip<S1, S2> where
    S1: Stream,
    S2: Stream<Error = <S1 as Stream>::Error>, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

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[src]

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Deprecated

: functionality provided by select now

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impl<S1, S2> Stream for Chain<S1, S2> where
    S1: Stream,
    S2: Stream<Item = <S1 as Stream>::Item, Error = <S1 as Stream>::Error>, 
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[src]

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[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

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impl<S, F, U> Stream for OrElse<S, F, U> where
    F: FnMut(<S as Stream>::Error) -> U,
    S: Stream,
    U: IntoFuture<Item = <S as Stream>::Item>, 
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[src]

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[src]

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[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

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impl<I, E> Stream for IterOk<I, E> where
    I: Iterator, 
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Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

[src]

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impl<I, T, E> Stream for Iter<I> where
    I: Iterator<Item = Result<T, E>>, 
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[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

[src]

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

[src]

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impl<S, F, U> Stream for AndThen<S, F, U> where
    F: FnMut(<S as Stream>::Item) -> U,
    S: Stream,
    U: IntoFuture<Error = <S as Stream>::Error>, 
[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

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[src]

Deprecated

: functionality provided by select now

[src]

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impl<S, F> Stream for SinkMapErr<S, F> where
    S: Stream, 
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[src]

[src]

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[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

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Deprecated

: functionality provided by select now

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impl<S, E> Stream for FromErr<S, E> where
    E: From<<S as Stream>::Error>,
    S: Stream, 
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[src]

Deprecated since 0.1.14

: please use Stream::concat2 instead

[src]

[src]

[src]

[src]

[src]

[src]

[src]

[src]

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[src]

Deprecated

: functionality provided by select now

[src]

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[src]

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[src]

Implementors