Hi Will, My "numerics" package on Github has for/vector with some slight extensions to yours. I think it also has more error checking so you might want to look at it. I also have for/fold/vector and some sequence abstractions. The code is all parameterised at expansion time by the vector representation.
http://github.com/noelwelsh/numeric N. On Wed, Aug 18, 2010 at 5:02 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 > > 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 > > I'll be adding more forms from time to time, as I need them. Eventually, > I'll release this to PLaneT, but I thought I might ask the community two > questions first: > > 1. Am I duplicating the functionality of some library? (If so, I'll just > contribute to that instead.) > 2. Do you have any iteration "favorites" that I should include in the > library? (Code welcome, but I'm also happy to implement suggestions myself.) > > Alternately, if you guys want to add these to the core, I'd be happy to > contribute code and tests.... > > Thanks, > Will > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/dev > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev
