Trait collection::MapOpsKeySum

pub trait MapOpsKeySum<K, V, M> where Self: MapOps<K, V, M>, M: Meta<KV<K, V>>, K: Val + Ord, V: Clone {
    fn merge(&mut self, b: &mut Self) -> Self;
}

Operations on a map with KeySum metadata

Required Methods

fn merge(&mut self, b: &mut Self) -> Self

Merge two maps, overwriting values from self with b

Implementors

• impl<K, V, M> MapOpsKeySum<K, V, M> for Collection<KV<K, V>, M> where M: Meta<KV<K, V>> + SubMeta<Key<K>> + SubMeta<KeySum<u64>>,
        K: Val + Ord + Hash,
        V: Clone