Struct actix_web::actix::fut::StreamFold

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[+] Expand attributes
#[must_use = "streams do nothing unless polled"]
pub struct StreamFold<S, F, Fut, T> where
    Fut: IntoActorFuture,  { /* fields omitted */ }

[−] Expand description

A future used to collect all the results of a stream into one generic type.

This future is returned by the ActorStream::fold method.

Trait Implementations

impl<S, F, Fut, T> ActorFuture for StreamFold<S, F, Fut, T> where     F: FnMut(T, <S as ActorStream>::Item, &mut <S as ActorStream>::Actor, &mut <<S as ActorStream>::Actor as Actor>::Context) -> Fut,     Fut: IntoActorFuture<Item = T, Actor = <S as ActorStream>::Actor>,     S: ActorStream,     <S as ActorStream>::Error: From<<Fut as IntoActorFuture>::Error>,

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type Item = T

The type of value that this future will resolved with if it is successful.

type Error = <S as ActorStream>::Error

The type of error that this future will resolve with if it fails in a normal fashion.

type Actor = <S as ActorStream>::Actor

The actor within which this future runs

fn poll(     &mut self,     act: &mut <S as ActorStream>::Actor,     ctx: &mut <<S as ActorStream>::Actor as Actor>::Context ) -> Result<Async<T>, <S as ActorStream>::Error>

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

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Map this future's result to a different type, returning a new future of the resulting type.

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

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Map this future's error to a different error, returning a new future.

fn drop_err(self) -> DropErr<Self>

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Drop this future's error, returning a new future.

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

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

fn then<F, B>(self, f: F) -> Then<Self, B, F> where     B: IntoActorFuture<Actor = Self::Actor>,     F: FnOnce(Result<Self::Item, Self::Error>, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> B,

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Chain on a computation for when a future finished, passing the result of the future to the provided closure f.

fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where     B: IntoActorFuture<Error = Self::Error, Actor = Self::Actor>,     F: FnOnce(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> B,

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Execute another future after this one has resolved successfully.

fn timeout(self, timeout: Duration, err: Self::Error) -> Timeout<Self>

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Add timeout to futures chain.

impl<S, F, Fut, T> Debug for StreamFold<S, F, Fut, T> where     F: Debug,     Fut: Debug + IntoActorFuture,     S: Debug,     T: Debug,     <Fut as IntoActorFuture>::Future: Debug,

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

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Formats the value using the given formatter.