RE: SCAN vs %scan

Wouldn't it be nice to have a RPG code sample on that page along with the C and Java? ;)

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Rory Hewitt
Sent: Monday, January 09, 2012 2:07 PM
To: RPG programming on the IBM i / System i
Subject: Re: SCAN vs %scan

Paul,

Nice find! Have you tried implementing this?

Rory

On Mon, Jan 9, 2012 at 11:49 AM, Morgan, Paul <Paul.Morgan@xxxxxxxxxxx>wrote:

Have you considered coding a faster string search algorithm like
Boyer-Moore?

http://en.wikipedia.org/wiki/Boyer%E2%80%93Moore_string_search_algorit
hm

Paul Morgan

Principal Programmer Analyst
IT Supply Chain/Replenishment

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of sjl
Sent: Monday, January 09, 2012 2:12 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: SCAN vs %scan

has anyone benchmarked speed comparison of using SCAN versus %SCAN?

I inherited and am maintaining a fixed-format RPGIV program which uses
SCAN to scan strings for certain values (hundreds of occurences of the
SCAN opcode), and I am wondering if I can get any kind of performance
improvement if I change them to use %scan instead.

- sjl



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Rory Hewitt

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