[][src]Struct futures::future::MapErr

#[must_use = "futures do nothing unless you `.await` or poll them"]
pub struct MapErr<Fut, F> { /* fields omitted */ }

Future for the map_err method.

Trait Implementations

impl<Fut, F, E> Future for MapErr<Fut, F> where
    F: FnOnce(<Fut as TryFuture>::Error) -> E,
    Fut: TryFuture
[src]

type Output = Result<<Fut as TryFuture>::Ok, E>

The type of value produced on completion.

impl<Fut, F> Unpin for MapErr<Fut, F> where
    Fut: Unpin
[src]

impl<Fut, F> Debug for MapErr<Fut, F> where
    F: Debug,
    Fut: Debug
[src]

impl<Fut, F, E> FusedFuture for MapErr<Fut, F> where
    F: FnOnce(<Fut as TryFuture>::Error) -> E,
    Fut: TryFuture
[src]

Auto Trait Implementations

impl<Fut, F> Send for MapErr<Fut, F> where
    F: Send,
    Fut: Send

impl<Fut, F> Sync for MapErr<Fut, F> where
    F: Sync,
    Fut: Sync

impl<Fut, F> UnwindSafe for MapErr<Fut, F> where
    F: UnwindSafe,
    Fut: UnwindSafe

impl<Fut, F> RefUnwindSafe for MapErr<Fut, F> where
    F: RefUnwindSafe,
    Fut: RefUnwindSafe

Blanket Implementations

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<F, T, E> TryFuture for F where
    F: Future<Output = Result<T, E>> + ?Sized
[src]

type Ok = T

The type of successful values yielded by this future

type Error = E

The type of failures yielded by this future

impl<T> FutureExt for T where
    T: Future + ?Sized
[src]

impl<Fut> TryFutureExt for Fut where
    Fut: TryFuture + ?Sized
[src]