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, F> Debug for MapErr<A, F> where
    A: Debug + Future,
    F: Debug


Formats the value using the given formatter. Read more

impl<U, A, F> Future for MapErr<A, F> where
    A: Future,
    F: FnOnce(<A as Future>::Error) -> U, 

A successful value

An error


Attempt to resolve the future to a final value, registering the current task for wakeup if the value is not yet available. Read more

Auto Trait Implementations

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