Re: SORTA of a qualified data structure

Vern Hamberg wrote:
-snip-

Now when you do the sort you describe, do it just as you have it - the
subfields end up being arrays, would you believe, and sorting one takes
all the rest with it.

You can't sort the data structure array by specifying one of the
subfields even if the subfields are defined to overlay the DS.

This is illegal if ArSf1 is an array:
SORTA ArSf1.ArField4

But in 7.1, you can code this to sort the ArSf1 data structure array by
the ArField4 subfield, keeping the other subfields in synch the way
Booth wants:
SORTA ArSf1(*).ArField4

Prior to 7.1, you have to jump through a few hoops to sort the DS array
by one of its subfields. Paul's article mentions one way using
pointers, but that way seems quite error prone to me. I'd use qsort
instead no matter how big the array is; qsort is quite straightforward
once you'd done it once.