Nowadays, it seems that when I've got an idea for a new program I want to write for Linux, if I search the Net, someone's already published an open-source version of it. Such was the case recently ...

Picat is a new logic-based programming language. In many ways, Picat is similar to Prolog, especially B-Prolog, but it has functions in addition to predicates, pattern-matching instead of unification ...