1 use crate::mapref;
2 use core::hash::{BuildHasher, Hash};
3 use core::ops::Deref;
4 use std::collections::hash_map::RandomState;
5 pub struct Ref<'a, K, S = RandomState> {
6     inner: mapref::one::Ref<'a, K, (), S>,
7 }
8 
9 impl<'a, K: Eq + Hash, S: BuildHasher> Ref<'a, K, S> {
new(inner: mapref::one::Ref<'a, K, (), S>) -> Self10     pub(crate) fn new(inner: mapref::one::Ref<'a, K, (), S>) -> Self {
11         Self { inner }
12     }
13 
key(&self) -> &K14     pub fn key(&self) -> &K {
15         self.inner.key()
16     }
17 }
18 
19 impl<'a, K: Eq + Hash, S: BuildHasher> Deref for Ref<'a, K, S> {
20     type Target = K;
21 
deref(&self) -> &K22     fn deref(&self) -> &K {
23         self.key()
24     }
25 }
26