On Wed, Aug 18, 2010 at 12:02 PM, Will M. Farr <wmf...@gmail.com> wrote: > Hello all, > > I've been thinking for a while about putting together a PLaneT library of > some iteration/comprehension forms that I often use that are not found in the > racket core. Right now, I have a small it-comp.plt local PLaneT package that > contains > > for/vector > for/flvector > in-flvector
Great! > The for/... forms have the option of having a first expression that gives the > length of the resulting object (similar to srfi-42's vector-of-length-ec > form) to allow generating more efficient code: > > (for/vector ((x (in-range 3))) x) => (vector 0 1 2) > (for/vector 3 ((x (in-range 3))) x) => (vector 0 1 2) ; but more efficiently What does this do if the specified length is wrong? > Alternately, if you guys want to add these to the core, I'd be happy to > contribute code and tests.... If you prepare a patch (with tests/docs) I'll get it committed. -- sam th sa...@ccs.neu.edu _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
