> The 2-3x estimate was for runtime, in the case of for loops with many > iterations (ie millions). I've just pushed some optimizations though > that cut the slowdown to maybe 1.5-2x, in preliminary experiments. So > you should "pkg update" (or pull if you are using the source directly) > to get the changes.
I've updated the generic-bind ~for/X forms so that its performance is the same as racket's for/X. The update relies on a change to racket though. So if you want to try it, first pull from racket git head, then update the generic-bind pkg. > > In addition, you should expect a noticeable compile-time slowdown, > though I dont have a firm grasp on how much. > > By the way, if you are matching lists, you can use the list-match > binding form directly, to eliminate an extra pair of parens: > > (~for/list ([($list a b) some-sequence]) > a) > > Please keep me updated with any problems you have. > > > >> >> Konrad. >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
