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.