Trait af_core::future::TryFutureExt[−][src]

pub trait TryFutureExt<T, E>: Sized {
    fn map_err<F, M>(self, map: M) -> MapErr<Self, M>ⓘ
Notable traits for MapErr<F, M>
impl<T, I, O, F, M> Future for MapErr<F, M> where
    F: Future<Output = Result<T, I>>,
    M: FnOnce(I) -> O,     type Output = Result<T, O>;

    where
        M: FnOnce(E) -> F,
    { ... }
}

Extension methods for futures that return a result.

Provided methods

fn map_err<F, M>(self, map: M) -> MapErr<Self, M>ⓘ

Notable traits for MapErr<F, M>

impl<T, I, O, F, M> Future for MapErr<F, M> where
    F: Future<Output = Result<T, I>>,
    M: FnOnce(I) -> O,  type Output = Result<T, O>;
 where
    M: FnOnce(E) -> F, [src]

Returns a new future that converts the error by applying a function.

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Implementors

impl<F, T, E> TryFutureExt<T, E> for F where
    F: TryFuture<T, E>, [src]

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