Do we know if ruby represents strings the same way Racket does? The representation in C clearly admits more efficient implementations of relevant operations here, and Ruby's might too.
Robby On Sun, Jan 17, 2016 at 2:00 PM, Jon Zeppieri <[email protected]> wrote: > My string-trim uses unsafe ops, but I'm pretty sure it's safe. The (safe) > string-length at the start ensures we're using a string. The rest are > indexing and fixnum arithmetic on integers that are guaranteed to be valid > indices of the string. > > Still, if you don't like this, replace the unsafe ops with the corresponding > safe ones. It will still be much faster than the built-in version. > >> On Jan 17, 2016, at 2:54 PM, Brian Adkins <[email protected]> wrote: >> >>> On Sunday, January 17, 2016 at 2:50:19 PM UTC-5, Brian Adkins wrote: >>> >>> With built-in string-trim, the lowest of three runs was 10293. Using your >>> string-trim the lowest of three runs was 7618, so it reduced the runtime by >>> 26%. >> >> Although, I probably should've mentioned that I'm not particularly >> interested in unsafe optimizations. I already have a very fast C program if >> I'm willing to risk unsafe behavior, so for Racket, I'd like to retain >> safety. >> >> Having said that, I'm pretty sure a combination of using Byte Strings and >> manually optimizing string-trim & string-replace (or skipping them in some >> cases) will get under the Ruby time. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Racket Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
