[Haskell-cafe] Proposal for restructuring Number classes

Andrew U. Frank frank at geoinfo.tuwien.ac.at
Wed Apr 19 06:07:11 EDT 2006

i am most grateful to henning and dylan for their effort in restructuring
the number classes. there seems to be agreement, that the current classes
are not optimal. the decision what goes in a class depends enormously on
what axioms one is assuming for an operation symbol. should * always be
commutative or is its use for non-commutative types acceptable? 

i will now make an effort to use the proposed classes by dylan and hennig
and adapt my code to it and then come back and report how it suited my

thank you for the help!

andrew frank

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