Struct actix::fut::Then

#[must_use = "futures do nothing unless polled"]
pub struct Then<A, B, F> where
    A: ActorFuture,
    B: IntoActorFuture<Actor = A::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: Debug, B: Debug, F: Debug> Debug for Then<A, B, F> where
    A: ActorFuture,
    B: IntoActorFuture<Actor = A::Actor>,
    B::Future: Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

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

type Item = B::Item

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

type Error = B::Error

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

type Actor = A::Actor

The actor within which this future runs

fn poll(
    &mut self,
    act: &mut A::Actor,
    ctx: &mut <A::Actor as Actor>::Context
) -> Poll<B::Item, B::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,
    Self: Sized, 

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,
    Self: Sized, 

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

fn drop_err(self) -> DropErr<Self> where
    Self: Sized, 

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

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

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
    F: FnOnce(Self::Item, &mut Self::Actor, &mut <Self::Actor as Actor>::Context) -> B,
    B: IntoActorFuture<Error = Self::Error, Actor = Self::Actor>,
    Self: Sized, 

Execute another future after this one has resolved successfully.