On Tue, Sep 20, 2011 at 10:08:16PM +0900, Daishi Kato wrote: > Hi, > > My situation is pretty similar to yours, meaning I used to use Perl > and later started using Chicken for my job. > > Running your scripts on my machine produced similar result > (about 10 times difference). > > -unsafe option in csc-4.6.0 didn't work (no change). > -unsafe-libraries in csc-4.0.0 did work (a little faster), > but it's not available in csc-4.6.0 (does anybody know why?). > > I also tried with csc-4.7.0, and guess what, it's a little slower > (at least on my test data. I partially crawled wiki.call-cc.org). > Peter, how could this happen?
This probably depends on the nature of your regex. We made the tradeoff that large consecutive ranges of characters are stored more efficiently as a range instead of as separate characters. This means that if you are using a regex with many separate chars it could be slightly slower. In some cases regexes can't be compiled to DFA but need to use backtracking, which is comparatively slow. That's not the case in Sascha's regex (I checked), but might be the reason it's slow for you. Cheers, Peter -- http://sjamaan.ath.cx -- "The process of preparing programs for a digital computer is especially attractive, not only because it can be economically and scientifically rewarding, but also because it can be an aesthetic experience much like composing poetry or music." -- Donald Knuth _______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users