Module futures::stream [−] [src]

Asynchronous streams.

This module contains:

The Stream trait, for objects that can asynchronously produce a sequence of values.
The StreamExt trait, which provides adapters for chaining and composing streams.
Top-level stream contructors like iter_ok which creates a stream from an iterator, and futures_unordered, which constructs a stream from a collection of futures.

Modules

An unbounded set of futures.

Structs

AndThen	A stream combinator which chains a computation onto values produced by a stream.
BufferUnordered	An adaptor for a stream of futures to execute the futures concurrently, if possible, delivering results as they become available.
Buffered	An adaptor for a stream of futures to execute the futures concurrently, if possible.
CatchUnwind	Stream for the `catch_unwind` combinator.
Chain	An adapter for chaining the output of two streams.
Chunks	An adaptor that chunks up elements in a vector.
Collect	A future which collects all of the values of a stream into a vector.
Concat	A stream combinator to concatenate the results of a stream into the first yielded item.
Empty	A stream which contains no elements.
ErrInto	A stream combinator to change the error type of a stream.
Filter	A stream combinator used to filter the results of a stream and only yield some values.
FilterMap	A combinator used to filter the results of a stream and simultaneously map them to a different type.
Flatten	A combinator used to flatten a stream-of-streams into one long stream of elements.
Fold	A future used to collect all the results of a stream into one generic type.
ForEach	A stream combinator which executes a unit closure over each item on a stream.
Forward	Future for the `Stream::forward` combinator, which sends a stream of values to a sink and then waits until the sink has fully flushed those values.
Fuse	A stream which "fuse"s a stream once it's terminated.
FuturesOrdered	An unbounded queue of futures.
FuturesUnordered	A set of `Future`s which may complete in any order.
Inspect	Do something with the items of a stream, passing it on.
InspectErr	Do something with the error of a stream, passing it on.
IterOk	A stream which is just a shim over an underlying instance of `Iterator`.
IterResult	A stream which is just a shim over an underlying instance of `Iterator`.
Map	A stream combinator which will change the type of a stream from one type to another.
MapErr	A stream combinator which will change the error type of a stream from one type to another.
Once	A stream which emits single element and then EOF.
OrElse	A stream combinator which chains a computation onto errors produced by a stream.
Peekable	A `Stream` that implements a `peek` method.
PollFn	A stream which adapts a function returning `Poll`.
Repeat	Stream that produces the same element repeatedly.
ReuniteError	Error indicating a `SplitSink<S>` and `SplitStream<S>` were not two halves of a `Stream + Split`, and thus could not be `reunite`d.
Select	An adapter for merging the output of two streams.
SelectAll	An unbounded set of streams
Skip	A stream combinator which skips a number of elements before continuing.
SkipWhile	A stream combinator which skips elements of a stream while a predicate holds.
SplitSink	A `Sink` part of the split pair
SplitStream	A `Stream` part of the split pair
StreamFuture	A combinator used to temporarily convert a stream into a future.
Take	A stream combinator which returns a maximum number of elements.
TakeWhile	A stream combinator which takes elements from a stream while a predicate holds.
Then	A stream combinator which chains a computation onto each item produced by a stream.
Unfold	A stream which creates futures, polls them and return their result
Zip	An adapter for merging the output of two streams.

Traits

Stream	A stream of values produced asynchronously.
StreamExt	An extension trait for `Stream`s that provides a variety of convenient combinator functions.

Functions

empty	Creates a stream which contains no elements.
futures_ordered	Converts a list of futures into a `Stream` of results from the futures.
iter_ok	Converts an `Iterator` into a `Stream` which is always ready to yield the next value.
iter_result	Converts an `Iterator` over `Result`s into a `Stream` which is always ready to yield the next value.
once	Creates a stream of single element
poll_fn	Creates a new stream wrapping around a function returning `Poll`.
repeat	Create a stream which produces the same item repeatedly.
unfold	Creates a `Stream` from a seed and a closure returning a `Future`.