Alexey Alekhin laughedelic
laughedelic
/ Prolog.hs
Created
December 1, 2011 15:32
— forked from hodzanassredin/Prolog.hs
simple type level predicates in haskell (with functional dependencies)
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| {-# LANGUAGE FunctionalDependencies #-} | |
| {-# LANGUAGE MultiParamTypeClasses, FlexibleInstances, UndecidableInstances #-} | |
| module Prolog (Petja, Vasja, Serg, Father, Son, GrandFather) where | |
| data Petja = Petja | |
| data Vasja = Vasja | |
| data Serg = Serg |