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Add entry_ref API to HashMap by ajtribick · Pull Request #301 · rust-lang/hashbr...
source link: https://github.com/rust-lang/hashbrown/pull/301
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An initial attempt at an entry_ref API to do the simple case that raw_entry_mut is used for. I basically attempted to mirror the existing entry API, but allow passing a borrowed version of the key. I left off mirroring the Send and Sync traits as I'm not sure what these should be.
The relationships I use between the key K and borrowed key Q is K: Borrow<Q> + From<&Q>. The reason for not using Q: ToOwned<K> is to support key types like Rc<str> (which is used in a couple of the doctests), which would not be possible with to_owned().
Hopefully this is somewhat useful.
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