[Haskell-cafe] Re: What do _you_ want to see in FGL?

[Ivan Lazar Miljenovic]

Heinrich Apfelmus <apfelmus at quantentunnel.de> writes:
> It appears to me that the concerns of labels and vertexes are not
> separate enough. After all, the point is that they have to be kept in
> sync. Keeping them in sync should be the business of the graph library,
> not of the user. It doesn't have to be baked into the graph type,
> though,  an abstract  Node  type might work as well.

An abstract vertex type is orthoganal to the label type (though it took
me a while to convince Thomas of that; he wanted to somehow embed the
vertex type inside the label :s).

-- 
Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com
IvanMiljenovic.wordpress.com