Phil Hagelberg <p...@hagelb.org> writes: Hi Phil,
>> If not, is there better way than inserting gazillions of printlns to >> check why and where a function doesn't do the right thing? > > Most definitely! Break your functions up into smaller pieces, then > write tests for them using test-is. If your functions are hard to > test, it's probably because they need to be broken out differently. Yeah, might be. To get started with clojure I tried to translate the Miller-Rabin pseudo prime algorithm from wikipedia. Basically it seems to work correctly, but the preformance is really bad for numbers above a certain limit. Investigated it a bit more (doing the algorithm step by step in the repl) and now I know what's the culprit: The `expt' function from the math contrib library is dead slow. For number theory you often need things like (mod (expt n exp) m) where the exponent may be very huge. Is that something which cannot be done faster in Clojure because of the Java Integer/BigInteger stuff? That would be a shame! I just fell in love with clojure cause the code looks that concise and right! Bye, Tassilo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---