The ffi has a directory of examples: https://github.com/plt/racket/tree/master/collects/ffi/examples
and there are many on PLaneT Jay 2011/2/7 Ben Dean <benjamin.d...@aya.yale.edu>: > I'm looking to put some Racket wrappers around bits of the OpenCV C api, but > I'm having a hard getting started. I've looked through the ffi/unsafe > documentation several times, but something isn't clicking-- I think I need > to peer at some examples. If anyone has a good example or two of calling C > code from Racket, I'd be much obliged. > In detail, what I imagine is going to happen is that I will be accessing > some (shared?) object files, created as part of the OpenCV build, by calling > (define function-name (get-ffi-obj function-name (ffi-lib lib-name) > format)...) > I'm not clear, however, on what the particular object files I'm looking up > with ffi-lib. I also am unclear about the convention for the function-name > parameter to get-ffi-obj. Is it as simple as a string of the the name that > the C api is exposing? > I hope I've revealed my ignorance appropriately-- if you noticed any other > misconceptions or egregious gaps, please do let me know! > ben > _________________________________________________ > For list-related administrative tasks: > http://lists.racket-lang.org/listinfo/users > -- Jay McCarthy <j...@cs.byu.edu> Assistant Professor / Brigham Young University http://faculty.cs.byu.edu/~jay "The glory of God is Intelligence" - D&C 93 _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
