Crate async_await Copy item path Source executor Executors future Futures prelude A “prelude” for crates using the futures crate. sink Asynchronous sinks stream Asynchronous streams sync Future-aware synchronization task Tasks used to drive a future computation thread Native threads. unsync Future-aware single-threaded synchronization async await task_local A macro to create a static of type LocalKey try_ready A macro for extracting the successful type of a Poll<T, E>. AndThen Future for the and_then combinator, chaining a computation onto the end of
another future which completes successfully. Canceled Error returned from a Receiver<T> whenever the corresponding Sender<T>
is dropped. Collect A future which takes a list of futures and resolves with a vector of the
completed values. Complete Represents the completion half of a oneshot through which the result of a
computation is signaled. Done A future representing a value that is immediately ready. Empty A future which is never resolved. Failed A future representing a value that is immediately ready. Finished A future representing a value that is immediately ready. Flatten Future for the flatten combinator, flattening a future-of-a-future to get just
the result of the final future. FlattenStream Future for the flatten_stream combinator, flattening a
future-of-a-stream to get just the result of the final stream as a stream. Fuse A future which “fuses” a future once it’s been resolved. IntoStream Future that forwards one element from the underlying future
(whether it is success of error) and emits EOF after that. Join Future for the join combinator, waiting for two futures to
complete. Join3 Future for the join3 combinator, waiting for three futures to
complete. Join4 Future for the join4 combinator, waiting for four futures to
complete. Join5 Future for the join5 combinator, waiting for five futures to
complete. Lazy A future which defers creation of the actual future until a callback is
scheduled. Map Future for the map combinator, changing the type of a future. MapErr Future for the map_err combinator, changing the error type of a future. Oneshot A future representing the completion of a computation happening elsewhere in
memory. OrElse Future for the or_else combinator, chaining a computation onto the end of
a future which fails with an error. Select Future for the select combinator, waiting for one of two futures to
complete. SelectAll Future for the select_all combinator, waiting for one of any of a list of
futures to complete. SelectNext Future yielded as the second result in a Select future. SelectOk Future for the select_ok combinator, waiting for one of any of a list of
futures to successfully complete. Unlike select_all, this future ignores all
but the last error, if there are any. Then Future for the then combinator, chaining computations on the end of
another future regardless of its outcome. Async Return type of future, indicating whether a value is ready or not. AsyncSink The result of an asynchronous attempt to send a value to a sink. Future Trait for types which are a placeholder of a value that may become
available at some later point in time. IntoFuture Class of types which can be converted into a future. Sink A Sink is a value into which other values can be sent, asynchronously. Stream A stream of values, not all of which may have been produced yet. collect Creates a future which represents a collection of the results of the futures
given. done Creates a new “leaf future” which will resolve with the given result. empty Creates a future which never resolves, representing a computation that never
finishes. failed Creates a “leaf future” from an immediate value of a failed computation. finished Creates a “leaf future” from an immediate value of a finished and
successful computation. lazy Creates a new future which will eventually be the same as the one created
by the closure provided. oneshot Creates a new futures-aware, one-shot channel. select_all Creates a new future which will select over a list of futures. select_ok Creates a new future which will select the first successful future over a list of futures. Poll Return type of the Future::poll method, indicates whether a future’s value
is ready or not. StartSend Return type of the Sink::start_send method, indicating the outcome of a
send attempt. See AsyncSink for more details.