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chromium / chromium / src / main / . / third_party / rust / chromium_crates_io / vendor / equivalent-v1
tree: 4e232b9cdebac64ba3c84f4ab7c4d8c3e6e463b1 [path history] [tgz]
  1. .github/
  2. src/
  3. .cargo-checksum.json
  4. .cargo_vcs_info.json
  5. .gitignore
  6. Cargo.lock
  7. Cargo.toml
  8. Cargo.toml.orig
  9. LICENSE-APACHE
  10. LICENSE-MIT
  11. README.md
third_party/rust/chromium_crates_io/vendor/equivalent-v1/README.md

Equivalent

crates.io docs

Equivalent and Comparable are Rust traits for key comparison in maps.

These may be used in the implementation of maps where the lookup type Q may be different than the stored key type K.

  • Q: Equivalent<K> checks for equality, similar to the HashMap<K, V> constraint K: Borrow<Q>, Q: Eq.
  • Q: Comparable<K> checks the ordering, similar to the BTreeMap<K, V> constraint K: Borrow<Q>, Q: Ord.

These traits are not used by the maps in the standard library, but they may add more flexibility in third-party map implementations, especially in situations where a strict K: Borrow<Q> relationship is not available.

License

Equivalent is distributed under the terms of both the MIT license and the Apache License (Version 2.0). See LICENSE-APACHE and LICENSE-MIT for details. Opening a pull request is assumed to signal agreement with these licensing terms.