Programming language: Rust
License: Apache License 2.0
Tags: Asynchronous     Future     Async     futures    
Latest version: v0.3.25

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Zero-cost asynchronous programming in Rust

Documentation | Website

futures-rs is a library providing the foundations for asynchronous programming in Rust. It includes key trait definitions like Stream, as well as utilities like join!, select!, and various futures combinator methods which enable expressive asynchronous control flow.


Add this to your Cargo.toml:

futures = "0.3"

The current futures requires Rust 1.45 or later.

Feature 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 = "0.3", default-features = false }


Licensed under either of [Apache License, Version 2.0](LICENSE-APACHE) or [MIT license](LICENSE-MIT) at your option.

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

*Note that all licence references and agreements mentioned in the futures-rs README section above are relevant to that project's source code only.