I think it is a bit silly to try to re-create OO with type classes or vice-versa. They are just two different modes of thinking and represent two different ways of architecting your program. Personally, I do find OOP a hoax, which leads to just horrendous code, but I'm sure either approach can be used to solve the problem at hand as long as you don't try to fit the round-peg in the square-hole.
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I think it is a bit silly to try to re-create OO with type classes or vice-versa. They are just two different modes of thinking and represent two different ways of architecting your program. Personally, I do find OOP a hoax, which leads to just horrendous code, but I'm sure either approach can be used to solve the problem at hand as long as you don't try to fit the round-peg in the square-hole.
For a case against OOP read : http://c2.com/cgi/wiki?ObjectOrientationIsaHoax