Struct actix::fut::StreamThen

#[must_use = "streams do nothing unless polled"]
pub struct StreamThen<S, F, U> where
    U: IntoActorFuture,  { /* fields omitted */ }

A stream combinator which chains a computation onto each item produced by a stream.

This structure is produced by the ActorStream::then method.

Trait Implementations

impl<S: Debug, F: Debug, U: Debug> Debug for StreamThen<S, F, U> where     U: IntoActorFuture,     U::Future: Debug,

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<S, F, U> ActorStream for StreamThen<S, F, U> where     S: ActorStream,     F: FnMut(Result<S::Item, S::Error>, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,     U: IntoActorFuture<Actor = S::Actor>,

type Item = U::Item

The type of item this stream will yield on success.

type Error = U::Error

The type of error this stream may generate.

type Actor = S::Actor

The actor within which this stream runs.

fn poll(     &mut self,     act: &mut S::Actor,     ctx: &mut <S::Actor as Actor>::Context ) -> Poll<Option<U::Item>, U::Error>

fn map<U, F>(self, f: F) -> StreamMap<Self, F> where     F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,     Self: Sized,

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

fn map_err<E, F>(self, f: F) -> StreamMapErr<Self, F> where     F: FnMut(Self::Error, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> E,     Self: Sized,

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

fn then<F, U>(self, f: F) -> StreamThen<Self, F, U> where     F: FnMut(Result<Self::Item, Self::Error>, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,     U: IntoActorFuture<Actor = Self::Actor>,     Self: Sized,

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

fn and_then<F, U>(self, f: F) -> StreamAndThen<Self, F, U> where     F: FnMut(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> U,     U: IntoActorFuture<Error = Self::Error, Actor = Self::Actor>,     Self: Sized,

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

fn fold<F, T, Fut>(self, init: T, f: F) -> StreamFold<Self, F, Fut, T> where     F: FnMut(T, Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> Fut,     Fut: IntoActorFuture<Actor = Self::Actor, Item = T>,     Self::Error: From<Fut::Error>,     Self: Sized,

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

fn timeout(self, timeout: Duration, err: Self::Error) -> StreamTimeout<Self> where     Self: Sized,     Self::Error: Clone,

Add timeout to stream.

fn finish(self) -> StreamFinish<Self> where     Self: Sized,

Converts a stream to a future that resolves when stream finishes.