Trait vrp_core::utils::CollectGroupBy

pub trait CollectGroupBy: Iterator {
    fn collect_group_by_key<K, V, FA>(
        self, 
        f: FA
    ) -> HashMap<K, Vec<V, Global>, RandomState, Global>
    where
        Self: Iterator<Item = V>,
        K: Hash + Eq,
        FA: Fn(&V) -> K,
    { ... }
    fn collect_group_by<K, V>(
        self
    ) -> HashMap<K, Vec<V, Global>, RandomState, Global>
    where
        Self: Iterator<Item = (K, V)>,
        K: Hash + Eq,
    { ... }
}

An iterator which collects items into group.

Provided Methods

fn collect_group_by_key<K, V, FA>(
    self,
    f: FA
) -> HashMap<K, Vec<V, Global>, RandomState, Global> where
    Self: Iterator<Item = V>,
    K: Hash + Eq,
    FA: Fn(&V) -> K, 

Collects items into group.

fn collect_group_by<K, V>(
    self
) -> HashMap<K, Vec<V, Global>, RandomState, Global> where
    Self: Iterator<Item = (K, V)>,
    K: Hash + Eq, 

Collects items into group.

Implementors

impl<T> CollectGroupBy for T where
    T: Iterator,