Finding non-common elements in two arrays
Bruce A. Pokras
macstacks at earthlink.net
Sat Nov 5 16:39:49 CST 2005
The intersect function will return the common elements of two arrays.
Is there any array methodology that will return the non-common
elements of two arrays? I download a government list each month, and
I would like an easy way to spot the records that are either new or
changed. Currently, I use a repeat structure to go through the old
list line-by-line to see if any lines are not identically found in
the new list (using offset), and collect a third list of any lines in
which offset=0. After splitting the old and new lists into arrays, an
"inverse-intersect" function or equivalent would seem to be a more
elegant way of doing this.
Blazing Dawn Software
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