4 ms·
ambit-0.9.1 -- a Gem for choose/fail (amb) non-deterministic programming
- wizard_2 15y agoLooks like this is a direct port of pg's version. I have to admit, I haven't seen callcc before and the concept while similar to closures scares me a bit. Storing a complete environment in a variable is a new concept to wrap my head around. This is an all-ruby implementation of choose/fail nondeterministic programming with branch cut, as described in Chapter 22 of Paul Graham’s On Lisp[1], or Section 4.3 of SICP[2]. Due to Ruby containing a true call/cc, this is a much straighter port of Paul Graham’s scheme version of this code than his Common Lisp or my C versions are. :-)