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

#[must_use = "futures do nothing unless polled"]pub struct MapErr<A, F> where
    A: Future
{ /* fields omitted */ }

Future for the map_err combinator, changing the error type of a future.

This is created by the Future::map_err method.

Trait Implementations

impl<A: Debug, F: Debug> Debug for MapErr<A, F> where
    A: Future
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impl<U, A, F> Future for MapErr<A, F> where
    A: Future,
    F: FnOnce(A::Error) -> U, 
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type Item = A::Item

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

type Error = U

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

Auto 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

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

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<F> IntoFuture for F where
    F: Future
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type Future = F

The future that this type can be converted into.

type Item = <F as Future>::Item

The item that the future may resolve with.

type Error = <F as Future>::Error

The error that the future may resolve with.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.