A first very sloppy and inefficient version of an avl-backed graph.
A first very sloppy and inefficient version of an avl-backed graph.

darcs-hash:20070930050413-db1bb-4cccd0f8b570c37304ff4176acad6e04e9dce73f

jutaro/rdf4h,ddssff/rdf4h,LeifW/rdf4h,cordawyn/rdf4h