Thanks for the links! However I am thinking about a different article. If I remember correctly I found it somewhere in the Haskell Wiki. Wikibooks have also a s

Thanks for the links! However I am thinking about a different article. If I remember correctly I found it somewhere in the Haskell Wiki. Wikibooks have also a similar article on the subject: http://en.wikibooks.org/wiki/Haskell/Category_theory http://en.wikibooks.org/wiki/Haskell/Category_theory