RE: READC, dou, and For

my 2 coppers...

if the SFLSIZ is greater than SFLPAG I prefer the READC & SFLNXTCHG (less 
records to process....999 records in a SFL think about it....)

SFLSIZ=SFLPAG I always use loop processing.  I really don't think there is 
going to be much difference in performance between a FOR loop & a DO 
loop...under the covers the compiler most likely generates almost identical 
code(just my guess here maybe Barbara can chime in on this..)

Thanks,
Tommy Holden


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Booth Martin
Sent: Tuesday, July 12, 2005 3:22 PM
To: RPG programming on the AS400 / iSeries
Subject: READC, dou, and For


An interesting discussion came up the other day.  Leastways, it was
interesting to me.

To read through a subfile in olden days we could use READC and SFLNXTCHG.  

Then it became a lot easier and just as fast to loop, reading every subfile
record, with a dou loop. 

Then along came the FOR loop and I am hearing that we should use a FOR loop,
from 1 to SFLRECS, where SFLRECS is the size of the subfile.

What are the thoughts of those here assembled?

---------------------------------
Booth Martin
http://www.martinvt.com
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