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ambit-0.9.1 -- a Gem for choose/fail (amb) non-deterministic programming

by jimwise on 4/26/11, 9:24 PM with 1 comments

• by wizard_2 on 4/28/11, 2:54 PM

  Looks 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. :-)