Struct actix_web::actix::fut::Then

#[must_use = "futures do nothing unless polled"]
pub struct Then<A, B, F> where
    A: ActorFuture,
    B: IntoActorFuture<Actor = <A as ActorFuture>::Actor>,  { /* fields omitted */ }

Future for the then combinator, chaining computations on the end of another future regardless of its outcome.

This is created by the Future::then method.

Trait Implementations

impl<A, B, F> ActorFuture for Then<A, B, F> where     A: ActorFuture,     B: IntoActorFuture<Actor = <A as ActorFuture>::Actor>,     F: FnOnce(Result<<A as ActorFuture>::Item, <A as ActorFuture>::Error>, &mut <A as ActorFuture>::Actor, &mut <<A as ActorFuture>::Actor as Actor>::Context) -> B,

type Item = <B as IntoActorFuture>::Item

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

type Error = <B as IntoActorFuture>::Error

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

type Actor = <A as ActorFuture>::Actor

The actor within which this future runs

fn poll(     &mut self,     act: &mut <A as ActorFuture>::Actor,     ctx: &mut <<A as ActorFuture>::Actor as Actor>::Context ) -> Result<Async<<B as IntoActorFuture>::Item>, <B as IntoActorFuture>::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,

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,

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

fn drop_err(self) -> DropErr<Self>

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

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

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,

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,

Execute another future after this one has resolved successfully.

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

Add timeout to futures chain.

impl<A, B, F> Debug for Then<A, B, F> where     A: Debug + ActorFuture,     B: Debug + IntoActorFuture<Actor = <A as ActorFuture>::Actor>,     F: Debug,     <B as IntoActorFuture>::Future: Debug,

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

Formats the value using the given formatter.