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# embedded-io [](https://docs.rs/embedded-io) IO traits for embedded systems. Rust's `std::io` traits are not available in `no_std` targets, mainly because `std::io::Error` requires allocation. This crate contains replacement equivalent traits, usable in `no_std` targets. The only difference with `std::io` is `Error` is an associated type. This allows each implementor to return its own error type, while avoiding `dyn` or `Box`. This is how errors are handled in [`embedded-hal`](https://github.com/rust-embedded/embedded-hal/). Async variations of the traits are also available, returning futures using generic associated types. Note this design is significantly different from both `futures::io` and `tokio::io`. The result is much more ergonomic, at the expense of requiring nightly. ## License This work is licensed under either of - Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>) - MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>) at your option. ## Contribution 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.
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11 entries across 11 versions & 1 rubygems