1# predicates-core 2 3> Traits for **boolean-valued predicate functions** in Rust. 4 5[](https://dev.azure.com/assert-rs/assert-rs/_build/latest?definitionId=1&branchName=master) 6[](https://docs.rs/predicates-core) 7 8[](https://crates.io/crates/predicates-core) 9 10[Changelog](https://github.com/assert-rs/predicates-rs/blob/master/crates/core/CHANGELOG.md) 11 12 13## License 14 15`predicates-core` is distributed under the terms of both the MIT license and the 16Apache License (Version 2.0). 17 18See LICENSE-APACHE, and LICENSE-MIT for details. 19 20 21## Credits 22 23Big thanks to [futures-rs](https://github.com/alexcrichton/futures-rs), whose 24slick API design informed a lot of decisions made on the API design of this 25library. 26