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Anyone have any tricks for comparing SELECT lists?

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Hello,

To provide context: I am still plugging along on an old R83 compatible environment (for a few more months...).

I was wondering if anyone had any tricks to compare SELECT lists  (saved via SAVE-LIST) to find either:

- differences
- common elements

and generate a third list .

Years ago I wrote my own 'differencer' in MVBasic. Maybe I've been missing neat tricks for...a while now.

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Anyone have any tricks for comparing SELECT lists? prairiepickster <donaldson@sedsystems.ca> - 2021-04-29 11:11 -0700
  Re: Anyone have any tricks for comparing SELECT lists? Bruce Ackman <brac5301@gmail.com> - 2021-04-30 09:14 -0700
    Re: Anyone have any tricks for comparing SELECT lists? prairiepickster <donaldson@sedsystems.ca> - 2021-05-03 12:03 -0700
      Re: Anyone have any tricks for comparing SELECT lists? Rob Allen <robertwallen2001@yahoo.com> - 2021-05-05 12:25 -0700

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