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Agreed, his code shows craft at every level. Is a hashlife by him on the web? The first page of google results only turned up an older comment by you.

• jacquesm 9y ago
  It used to be, let me see if I can dig it up. Grr, nope :( That sucks. Ok, so try this instead: http://norvig.com/sudoku.html http://norvig.com/sudoku.html Not quite as satisfying but it gives you the general idea, his whole approach is elegant and super direct.
  • abecedarius 9y ago
    Oh well, thanks! I'll read the Sudoku solver after I get around to writing my own -- it helps to keep you from just nodding along.
    • jacquesm 9y ago
      I sent an email to see if I'm either mis-remembering or it got taken down. Ok, received answer from Peter Norvig, I must have mis-remembered who wrote what I read, but in the interest of completeness here is a life implementation by Peter Norvig (but not hashlife): https://github.com/norvig/pytudes/blob/master/Life.ipynb https://github.com/norvig/pytudes/blob/master/Life.ipynb
      • abecedarius 9y ago
        Nice. I saw one working like that in Clojure and rewrote it in my own Lisp: https://github.com/darius/squeam/blob/master/eg/bag-life.scm https://github.com/darius/squeam/blob/master/eg/bag-life.scm (the bag is like Python's Counter).