pub enum TryMaybeDone<Fut: TryFuture> {
    Future(Fut),
    Done(Fut::Ok),
    Gone,
}
Expand description

A future that may have completed with an error.

This is created by the try_maybe_done() function.

Variants§

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Future(Fut)

A not-yet-completed future

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Done(Fut::Ok)

The output of the completed future

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Gone

The empty variant after the result of a TryMaybeDone has been taken using the take_output method, or if the future returned an error.

Implementations§

Returns an Option containing a mutable reference to the output of the future. The output of this method will be Some if and only if the inner future has completed successfully and take_output has not yet been called.

Attempt to take the output of a TryMaybeDone without driving it towards completion.

Trait Implementations§

Formats the value using the given formatter. Read more
Returns true if the underlying future should no longer be polled.
The type of value produced on completion.
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§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The output that the future will produce on completion.
Which kind of future are we turning this into?
Creates a future from a value. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type of successful values yielded by this future
The type of failures yielded by this future
Poll this TryFuture as if it were a Future. Read more
The type returned in the event of a conversion error.
Performs the conversion.