Type Alias Poll

pub type Poll<T, E> = Result<Async<T>, E>;

Return type of the Future::poll method, indicates whether a future’s value is ready or not.

• Ok(Async::Ready(t)) means that a future has successfully resolved
• Ok(Async::NotReady) means that a future is not ready to complete yet
• Err(e) means that a future has completed with the given failure

Aliased Type

enum Poll<T, E> {
    Ok(Async<T>),
    Err(E),
}

Variants

Ok(Async<T>)

Contains the success value

Err(E)

Contains the error value