Cargo Features
[dependencies]
futures-util-preview = { version = "0.3.0-alpha.19", default-features = false, features = ["std", "alloc", "async-await", "compat", "io-compat", "sink", "io", "channel", "join-macro", "select-macro", "unstable", "cfg-target-has-atomic", "bilock", "read_initializer"] }
- default = std
-
The
std
feature is set by default wheneverfutures-util-preview
is added without
somewhere in the dependency tree.default-features = false - std default channel? compat? io? = alloc, slab
-
Enables std of futures-core-preview
Affects
future::FutureExt.catch_unwind
,future::FutureExt.shared
,stream::StreamExt.catch_unwind
,noop_waker::noop_waker_ref
,future::FutureExt.remote_handle
,futures-util-preview::async_await
,futures-util-preview::io
,spawn::SpawnExt.spawn_with_handle
,spawn::LocalSpawnExt.spawn_local_with_handle
,try_stream::TryStreamExt.into_async_read
… - alloc std
-
Enables alloc of futures-core-preview
Affects
future::FutureExt.boxed
,future::FutureExt.boxed_local
,futures-util-preview::lock
,sink::SinkExt.buffer
,stream::futures_unordered
,stream::StreamExt.for_each_concurrent
,stream::StreamExt.boxed
,stream::StreamExt.boxed_local
,stream::StreamExt.buffered
,stream::StreamExt.buffer_unordered
,stream::StreamExt.chunks
,spawn::SpawnExt.spawn
,spawn::LocalSpawnExt.spawn_local
,try_stream::TryStreamExt.try_for_each_concurrent
,try_stream::TryStreamExt.try_buffer_unordered
,stream::StreamExt.split
… - async-await join-macro? select-macro?
-
Affects
futures-util-preview::async_await
… - compat io-compat? = futures_01, std
-
Affects
futures-util-preview::compat
,sink::SinkExt.compat
,spawn::SpawnExt.compat
,try_future::TryFutureExt.compat
,try_stream::TryStreamExt.compat
… - io-compat = compat, io, tokio-io
-
Affects
io::AsyncReadExt.compat
,io::AsyncWriteExt.compat_write
… - sink = futures-sink-preview
-
Affects
compat01as03::Sink01CompatExt
,compat01as03::Compat01As03Sink
,compat03as01::CompatSink
,io::AsyncWriteExt.into_sink
,futures-util-preview::sink
,stream::StreamExt.forward
,try_future::TryFutureExt.flatten_sink
,stream::StreamExt.split
… - io io-compat? read_initializer? = futures-io-preview, memchr, std
-
Affects
futures-util-preview::io
,try_stream::TryStreamExt.into_async_read
… - channel = futures-channel-preview, std
-
Affects
future::FutureExt.remote_handle
,spawn::SpawnExt.spawn_with_handle
,spawn::LocalSpawnExt.spawn_local_with_handle
… - join-macro = async-await, futures-join-macro-preview, proc-macro-hack, proc-macro-nested
- select-macro = async-await, futures-select-macro-preview, proc-macro-hack, proc-macro-nested
- unstable
-
Unstable features These features are outside of the normal semver guarantees and require the
unstable
feature as an explicit opt-in to unstable API.Enables unstable of futures-core-preview
- cfg-target-has-atomic
-
Enables cfg-target-has-atomic of futures-core-preview
- bilock
-
Affects
bilock::BiLockAcquire
… - read_initializer = io
-
Enables read_initializer and unstable of futures-io-preview
Features from optional dependencies
In crates that don't use the dep:
syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.
- futures-channel-preview channel?
- futures-io-preview io? read_initializer?
- futures-sink-preview sink?
- futures-join-macro-preview join-macro?
- futures-select-macro-preview select-macro?
- proc-macro-hack join-macro? select-macro?
- proc-macro-nested join-macro? select-macro?
- slab std
- memchr io?
- futures_01 compat?
-
Enables futures ^0.1.25
- tokio-io io-compat?