This may NOT necessarily be true as a REORG may have been done, then as far as the RRN is concerned, all bets are off.
If the file is to re-use deleted records, again, all bets are off
Alan Shore
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"If you're going through Hell, keep going" - Winston Churchill
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Voris, John
Sent: Friday, November 11, 2011 9:14 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: %lookup on a Data Structure Array
If you are thinking of manually loading the array at program initialization, then also remember this.
If you decide to load the array from the file - and you believe that now or in the future, you will not be loading ALL the records from the file
- then load the array from the end of the file.
That is end of the file in RRN reverse sequencial order.
Then you are more likely to avoid the inactive no-longer-used records found at the beginning of the file.
In fact, when you interogate the file, you often find that the first records in the file were history records from some conversion effort.
And may not be in use anymore.
This is usually true of customer and order files. Note that files of master codes are usually not like this, and that the codes still in use are scattered throughout the file.
. . . define the array with a max of 100k elements . . .
--
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