Struct actix::fut::StreamMapErr
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#[must_use = "streams do nothing unless polled"]pub struct StreamMapErr<S, F> { /* fields omitted */ }
A stream combinator which will change the error type of a stream from one type to another.
This is produced by the ActorStream::map_err
method.
Trait Implementations
impl<S: Debug, F: Debug> Debug for StreamMapErr<S, F>
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impl<S, F, U> ActorStream for StreamMapErr<S, F> where
S: ActorStream,
F: FnMut(S::Error, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,
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S: ActorStream,
F: FnMut(S::Error, &mut S::Actor, &mut <S::Actor as Actor>::Context) -> U,
type Item = S::Item
The type of item this stream will yield on success.
type Error = U
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 Self::Actor,
ctx: &mut <S::Actor as Actor>::Context
) -> Poll<Option<S::Item>, U>
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&mut self,
act: &mut Self::Actor,
ctx: &mut <S::Actor as Actor>::Context
) -> Poll<Option<S::Item>, U>
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,
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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,
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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,
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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
. Read more
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,
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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
. Read more
fn finish(self) -> StreamFinish<Self> where
Self: Sized,
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Self: Sized,
Converts a stream to a future that resolves when stream completes.