Function pathfinding::connected_components

pub fn connected_components<N, FN, IN>(
    starts: &[N], 
    neighbours: FN
) -> Vec<HashSet<N>> where
    N: Clone + Hash + Eq,
    FN: FnMut(&N) -> IN,
    IN: IntoIterator<Item = N>, 

Extract connected components from a graph.

• starts is a collection of vertices to be considered as start points.
• neighbours is a function returning the neighbours of a given node.

This function returns a list of sets of nodes forming disjoint connected sets.