[MLton] Representation of strings in the FFI

Stephen Weeks MLton@mlton.org
Wed, 27 Apr 2005 16:08:53 -0700

> I take it, I should use GC_arrayNumElementsp at the C level.
> /* The array size is stored before the header */
> static inline uint* GC_arrayNumElementsp (pointer a) {
> static inline int GC_arrayNumElements (pointer a) {

Yes, you can use either of these.  Although you could use the same
trick I just mentioned too, with the drawback that only monomorphic
values may be exported

val _ = _export "intArrayLength": int array -> int;