[][src]Crate futures_util

Combinators and utilities for working with Futures, Streams, Sinks, and the AsyncRead and AsyncWrite traits.

Modules

future

Futures

io

IO

lock

Futures-powered synchronization primitives.

never

Definition of the Never type, a stand-in for the ! type until it becomes stable.

sink

Sinks

stream

Streams

task

Task notification

Macros

join

Polls multiple futures simultaneously, returning a tuple of all results once complete.

pending

A macro which yields to the event loop once.

pin_mut

Pins a value on the stack.

poll

A macro which returns the result of polling a future once within the current async context.

ready

Extracts the successful type of a Poll<T>.

select

Polls multiple futures and streams simultaneously, executing the branch for the future that finishes first. If multiple futures are ready, one will be pseudo-randomly selected at runtime. Futures directly passed to select! must be Unpin and implement FusedFuture.

try_join

Polls multiple futures simultaneously, resolving to a Result containing either a tuple of the successful outputs or an error.