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OK., just for the heck of it I ran some (totally) unscientific tests:
I wrote a small program that loaded a 4000 element array from an old
customer file, and then tried to find the same string in two subroutines:
The first using %SCAN and the second using SCAN. Ran the program several
times with and without optimization and the result was that %SCAN seemed to
be consistently faster than SCAN.
This was run on an old V5R3 Power 5, and the results varied a lot (it
depends on what was being done on the server at the moment), but the time
was always at least a second faster using %SCAN.
Your mileage can (and sure will) vary :-)
HTH,
Luis Rodriguez
IBM Certified Systems Expert — eServer i5 iSeries
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