Taking advice from others on this list, I wrote a small program to compare the execution time of extracting 10000 elements from an MV list using FOR/NEXT loop with <1,I> delimiters verus using LOOP/WHILE with REMOVE. I should note this was done on Unidata 6.0.3.
All the previous comments are still valid - the LOOP/WHILE with REMOVE beats a FOR/NEXT loop dramatically. That is, on an MV list with 10000 elements, FOR/NEXT took about 6500 milliseconds while LOOP/WHILE took 15 milliseconds (that's not a typo). I ran the test 10+ times, I reversed the order of the tests and the result was the same every time. So if you need to loop over all elements in an MV list, the LOOP/WHILE/REMOVE structure seems inherently more efficient than the FOR/NEXT/<1,I> notation. Jeff Butera, Ph.D. Administrative Systems Hampshire College [EMAIL PROTECTED] 413-559-5556 "...our behavior matters more than the beliefs that we profess." Elizabeth Deutsch Earle ------- u2-users mailing list u2-users@listserver.u2ug.org To unsubscribe please visit http://listserver.u2ug.org/