The FFI now includes support for C arrays and unions. As Eli has noted, libffi (which Racket uses for calls to foreign functions) doesn't exactly support arrays within structs (which is one the main places to use arrays), but we're trying something. If you run into problems, be at least a little suspicious of the FFI implementation for now.
Use `_array' to construct an array ctype, and use `array-ref' and `array-set!' on Racket representations of arrays. The `_array', `array-ref', and `array-set!' functions support multiple dimensions. Use `_union' to construct an array ctype, and use `union-ref' and `union-set!' on Racket representations of unions. The union support is minimal for now; variants are accessed by position instead of by a name. _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/dev