Trait itertools::duplicates_impl::private::KeyMethod

pub trait KeyMethod<K, V> {
    type Container: KeyXorValue<K, V>;

    // Required method
    fn make(&mut self, value: V) -> Self::Container;
}

A keying method for use with DuplicatesBy

Required Associated Types

type Container: KeyXorValue<K, V>

Required Methods

fn make(&mut self, value: V) -> Self::Container

Implementors

impl<K, V, F> KeyMethod<K, V> for ByFn<F>where F: FnMut(&V) -> K,

type Container = KeyValue<K, V>

impl<V> KeyMethod<V, V> for ById

type Container = JustValue<V>