[GAP Forum] Sortex( list, func )

[Stefan Witzel]

Hello,

is there a reason why the versions Sort and SortParallel exist with an optional Argument func which permits to define an own comparison function while for Sortex and SortingPerm such a version does not exist?
And if so, is there a simple way to obtain what

  SortingPerm(ConjugacyClasses, cmp)

would do (for a given function cmp) if there were such a version?

Thanks for any suggestions!
Stefan Witzel