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use std::hash::Hash;
use std::hash::BuildHasher;
use super::{OrderMap, Equivalent};
pub struct PrivateMarker { }
pub trait MutableKeys {
type Key;
type Value;
fn get_full_mut2<Q: ?Sized>(&mut self, key: &Q)
-> Option<(usize, &mut Self::Key, &mut Self::Value)>
where Q: Hash + Equivalent<Self::Key>;
fn retain2<F>(&mut self, keep: F)
where F: FnMut(&mut Self::Key, &mut Self::Value) -> bool;
fn __private_marker(&self) -> PrivateMarker;
}
impl<K, V, S> MutableKeys for OrderMap<K, V, S>
where K: Eq + Hash,
S: BuildHasher,
{
type Key = K;
type Value = V;
fn get_full_mut2<Q: ?Sized>(&mut self, key: &Q)
-> Option<(usize, &mut K, &mut V)>
where Q: Hash + Equivalent<K>,
{
if let Some((_, found)) = self.find(key) {
let entry = &mut self.entries[found];
Some((found, &mut entry.key, &mut entry.value))
} else {
None
}
}
fn retain2<F>(&mut self, keep: F)
where F: FnMut(&mut K, &mut V) -> bool,
{
self.retain_mut(keep)
}
fn __private_marker(&self) -> PrivateMarker {
PrivateMarker { }
}
}