Alexy Khrabrov wrote:
> In some folds over data when creating ocmalgraph's, I'd need an empty 
> vertex value, something like V.null, to give to an edge-creating fold 
> when I know it's not going to be used.  Currently I have to look ahead 
> into the data.  Does it make sense to add a null value to the V 
> module, or is there another OCaml way to give a fold an empty V value?
What about using an option type instead?

I kind of dislike the idea of introducing an infamous "null" value in 
Ocamlgraph...

--
Jean-Christophe