Re: [Haskell-cafe] Interesting feature

On Mon, 07 Jul 2008 12:30:34 +0200 (CEST) Henning Thielemann wrote:

Actually the type system of Haskell is also logic programming. I have implemented a simple kind of logic programming using lazy peano numbers: http://darcs.haskell.org/unique-logic/

There is also Curry which is basically Haskell extended with features from logic programming. There you get to use ordinary values instead of having to use types. However, it seems that Curry's solution finding mechanism is built-in to the language and cannot be modified (e.g. for performance reasons) without modifying the language implementation. (I think the same would be true for logic programming with Haskell types.) -- Robin