EdgeWeightedDigraph represents a digraph, you can add an edge, get the number vertexes, edges, get all edges and use toString to print the Digraph.

1. Add the dependency to your shard.yml:

   dependencies:
     cadmium_graph:
       github: cadmiumcr/graph

2. Run shards install

require "cadmium_graph"

digraph = Cadmium.edge_weighted_digraph.new

digraph.add(5, 4, 0.35)
digraph.add(5, 1, 0.32)
digraph.add(1, 3, 0.29)
digraph.add(6, 2, 0.40)
digraph.add(3, 6, 0.52)
digraph.add(6, 4, 0.93)

puts digraph.v # => 7
puts digraph.e # => 6

1. Fork it (https://github.com/cadmiumcr/graph/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

• Chris Watson - creator and maintainer