Function petgraph::algo::has_path_connecting

pub fn has_path_connecting<G>(g: G,
                              from: G::NodeId,
                              to: G::NodeId,
                              space: Option<&mut DfsSpace<G::NodeId, G::Map>>)
                              -> bool where G: IntoNeighbors + Visitable

[Generic] Check if there exists a path starting at from and reaching to.

If from and to are equal, this function returns true.

If space is not None, it is used instead of creating a new workspace for graph traversal.