Re: [Haskell-cafe] Thoughts on Haskell and OOP

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"Kevin" == Kevin Van Horn writes:

Kevin> What do the rest of you think? Is my analysis correct? No, because ... Kevin> Properly used, OOP is all about interface inheritance, not Kevin> implementation inheritance. (At least in C++, Kevin> implementation inheritance -- inheriting the data members Kevin> and method implementations of a base class -- usually leads Kevin> to bad design, and is discouraged by the experts.) But C++ isn't OOP. It's a bodge where OO stuff is added on top of C. Naturally, this doesn't work out well. But that isn't necessarily why C++ doesn't vdo implementation inheritance well. Properly used, OOP is all about interface inheritance and implementation inheritance, with contracts used to ensure semantically correct behaviour. See Eiffel. -- Colin Adams Preston Lancashire