Abstract

In [1] we presented the language TOY(FD) that integrates the best features of existing functional and logic languages, as well as finite domain (FD) constraint solving. We believe that TOY(FD) is more flexible and expressive than the existing approaches of constraint logic programming on finite domain (CLP(FD)) as it integrates FD constraint solving, lazy evaluation, higher order applications of functions and constraints, polymorphism, type checking, composition of functions (and, in particular, constraints), combination of relational and functional notation, and a number of other characteristics. These features allow to write more concise programs, therefore increasing the expressivity level.

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