futures 0.1.31

An implementation of futures and streams featuring zero allocations, composability, and iterator-like interfaces.


This library is an implementation of zero-cost futures in Rust.

Build Status Crates.io




First, add this to your Cargo.toml:

futures = "0.1.26"

Next, add this to your crate:

extern crate futures;

use futures::Future;

For more information about how you can use futures with async I/O you can take a look at https://tokio.rs which is an introduction to both the Tokio stack and also futures.

Feature use_std

futures-rs works without the standard library, such as in bare metal environments. However, it has a significantly reduced API surface. To use futures-rs in a #[no_std] environment, use:

futures = { version = "0.1.26", default-features = false }


This project is licensed under either of

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in Futures by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.