Struct futures_util::future::InspectErr

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

Do something with the error of a future, passing it on.

This is created by the [FutureExt::inspect_err] method.

Trait Implementations

impl<A: Debug, F: Debug> Debug for InspectErr<A, F> where
    A: Future, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<A, F> Future for InspectErr<A, F> where
    A: Future,
    F: FnOnce(&A::Error), 

type Item = A::Item

A successful value

type Error = A::Error

An error

fn poll(&mut self, cx: &mut Context) -> Poll<A::Item, A::Error>

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