src/libstd/collections/hash/mod.rs


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//! Unordered containers, implemented as hash-tables

mod bench;
mod table;
pub mod map;
pub mod set;

trait Recover<Q: ?Sized> {
    type Key;

    fn get(&self, key: &Q) -> Option<&Self::Key>;
    fn take(&mut self, key: &Q) -> Option<Self::Key>;
    fn replace(&mut self, key: Self::Key) -> Option<Self::Key>;
}