---Alex Rufon wrote: > SortUp and GradeUp are both defined as /: in the primitives. In > parallel, SortDown and GradeDown also suffers the same issue.
SortUp refers to dyadic use of /:, GradeUp refers to monadic use of /: /:~ myarray Is the special case of SortUp where you are sorting it by the grade of itself, i.e. myarray /: myarray However often you will want to use myarray /: my2ndarray You cannot do this if you redefine SortUp as /:~ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
