Function veho::hashmap::mapper_key

pub fn mapper_key<K, V, KVS, KT, F>(kvp: KVS, f: F) -> HashMap<KT, V> where
    K: Hash + Eq,
    KVS: IntoIterator<Item = (K, V)>,
    F: FnMut(K) -> KT,
    KT: Hash + Eq,