pub struct MapErr<A, F>where
A: ActorFuture,{ /* private fields */ }
Expand description
Future for the map_err
combinator, changing the error type of a future.
This is created by the Future::map_err
method.
Trait Implementations
sourceimpl<U, A, F> ActorFuture for MapErr<A, F>where
A: ActorFuture,
F: FnOnce(<A as ActorFuture>::Error, &mut <A as ActorFuture>::Actor, &mut <<A as ActorFuture>::Actor as Actor>::Context) -> U,
impl<U, A, F> ActorFuture for MapErr<A, F>where
A: ActorFuture,
F: FnOnce(<A as ActorFuture>::Error, &mut <A as ActorFuture>::Actor, &mut <<A as ActorFuture>::Actor as Actor>::Context) -> U,
type Item = <A as ActorFuture>::Item
type Item = <A as ActorFuture>::Item
The type of value that this future will resolved with if it is
successful. Read more
type Error = U
type Error = U
The type of error that this future will resolve with if it fails in a
normal fashion. Read more
type Actor = <A as ActorFuture>::Actor
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<<A as ActorFuture>::Item>, U>
sourcefn 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,
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. Read more
sourcefn 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,
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.
sourcefn drop_err(self) -> DropErr<Self>where
Self: Sized,
fn drop_err(self) -> DropErr<Self>where
Self: Sized,
Drop this future’s error, returning a new future.
sourcefn from_err<E>(self) -> FromErr<Self, E>where
E: From<Self::Error>,
Self: Sized,
fn from_err<E>(self) -> FromErr<Self, E>where
E: From<Self::Error>,
Self: Sized,
Map this future’s error to any error implementing
From
for
this future’s Error
, returning a new future. Read moresourcefn 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,
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
. Read moreAuto Trait Implementations
impl<A, F> RefUnwindSafe for MapErr<A, F>where
A: RefUnwindSafe,
F: RefUnwindSafe,
impl<A, F> Send for MapErr<A, F>where
A: Send,
F: Send,
impl<A, F> Sync for MapErr<A, F>where
A: Sync,
F: Sync,
impl<A, F> Unpin for MapErr<A, F>where
A: Unpin,
F: Unpin,
impl<A, F> UnwindSafe for MapErr<A, F>where
A: UnwindSafe,
F: UnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<F> IntoActorFuture for Fwhere
F: ActorFuture,
impl<F> IntoActorFuture for Fwhere
F: ActorFuture,
type Future = F
type Future = F
The future that this type can be converted into.
type Item = <F as ActorFuture>::Item
type Item = <F as ActorFuture>::Item
The item that the future may resolve with.
type Error = <F as ActorFuture>::Error
type Error = <F as ActorFuture>::Error
The error that the future may resolve with.
type Actor = <F as ActorFuture>::Actor
type Actor = <F as ActorFuture>::Actor
The actor within which this future runs
sourcefn into_future(self) -> F
fn into_future(self) -> F
Consumes this object and produces a future.