Function rs_graph::branching::max_weight_branching

pub fn max_weight_branching<'a, 'b, G, W>(
    g: &'a G, 
    weights: &EdgeSlice<'a, 'b, G, W>
) -> Vec<G::Edge> where
    G: IndexDigraph<'a>,
    W: NumAssign + Ord + Copy,