Hi, a number of modules (like the hash module or the list module) allow the user to specify callbacks (e.g. a comparison function). Unfortunately, these procedures do not take a context parameter, which can be a problem because C lacks closures.
The original qsort function in stdlib.h has the same problem. Glibs has remedied the problem by introducing qsort_r. It would be nice if the modules hash, list, xlist, oset, xoset, ... are extended in a similar way. We would essentially need new constructors, say with the '_r' suffix. Marc
