Hi. I'm just copy-pasting from the letter I wrote to the Racket list. Just a bunch of reverse-string solutions. Try running test-reverse-string.rkt in you Geiser repl if you want to replicate.
> Mostly a question to Jay McCarthy but I suppose could be interesting to > others. Was going over his Reversing strings article. Somehow I get weird > performance. Slowest solution turns out fastest, medium, fast and really fast > are only marginally different. > > Could anyone have a look https://github.com/vkz/warm-up > reverse-string.rkt has the solutions > test-reverse-string.rkt does the performance check > Testing it on 40'000 randomly generated strings 1000 chars each. > Oh, wow. So I was testing this in Geiser repl in emacs: > (2467 4631 4088 3934) Where apparently "slower" one wins > > But in DrRacket the result looks plausible: > (8994 1859 1094 865) > > Does that mean Geiser shouldn't be trusted? Restarting the repl and running from the clean slate doesn't help. Shows plausible results in DrRacket and correct results when run in command line. --- Vlad Kozin <[email protected]>
