[Haskell-cafe] Graph type

[C K Kashyap]

Hi,
I am trying to write a routine that would generate a graph - where each
vertex would be a string.

type Graph v = [(v,[v])]  -- list of tuples of vertices and adjacent
vertices list

addEdgeToGraph :: Graph -> String -> String -> Graph

I am having trouble coming up with the body of this function - that takes
the original graph, and an edge (string -> string) and the produces the new
graph.

-- 
Regards,
Kashyap
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