Struct futures_state_stream::FlattenStateStream

pub struct FlattenStateStream<F>(_)
 where
    F: Future;

A stream which evaluates a future and then then stream returned by it.

Trait Implementations

impl<F, E, S> StateStream for FlattenStateStream<F> where
    F: Future<Error = (E, S)>,
    F::Item: StateStream<Error = E, State = S>, 

type Item = <F::Item as StateStream>::Item

The items being streamed.

type State = S

The state returned when streaming completes.

type Error = E

The error returned.

fn poll(
    &mut self
) -> Poll<StreamEvent<Self::Item, Self::State>, (Self::Error, Self::State)>

Similar to Stream::poll.

fn into_future(self) -> IntoFuture<Self> where
    Self: Sized, 

Returns a future which yields the next element of the stream.

fn into_stream(self) -> IntoStream<Self> where
    Self: Sized, 

Returns a normal Stream which yields the elements of this stream and discards the state.

fn map<F, B>(self, f: F) -> Map<Self, F> where
    Self: Sized,
    F: FnMut(Self::Item) -> B, 

Returns a stream which applies a transform to items of this stream.

fn map_err<F, B>(self, f: F) -> MapErr<Self, F> where
    Self: Sized,
    F: FnMut(Self::Error) -> B, 

Returns a stream which applies a transform to errors of this stream.

fn map_state<F, B>(self, f: F) -> MapState<Self, F> where
    Self: Sized,
    F: FnOnce(Self::State) -> B, 

Returns a stream which applies a transform to the state of this stream.

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

Returns a stream which filters items of this stream by a predicate.

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

Returns a stream which filters and transforms items of this stream by a predicate.

fn collect(self) -> Collect<Self> where
    Self: Sized, 

Returns a stream which collects all items of this stream into a Vec, returning it along with the stream's state.

fn for_each<F>(self, f: F) -> ForEach<Self, F> where
    Self: Sized,
    F: FnMut(Self::Item), 

Returns a future which applies a closure to each item of this stream.