Polytypic programming

[Till Mossakowski]

Previous versions of ghc seemed to have supported some
style of polytypic programming:

http://haskell.cs.yale.edu/ghc/docs/latest/set/generic-classes.html

When will this feature become available again?
Is it availabe in older ghc versions?
Or is there some alternative way of doing polytypic programming
with ghc?

Till Mossakowski
-- 
Till Mossakowski                Phone +49-421-218-4683
Dept. of Computer Science       Fax +49-421-218-3054
University of Bremen            till@tzi.de           
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