Re: This is cool.

Yes, but you don't need O specs to use compile time data. If you use the initialized data structure, when does that get initialized/reclaimed? I guess if you use it in a procedure, that would be each time the procedure is called, and goes away when the procedure ends because it is in automatic storage. Maybe a slight benefit if the procedure isn't called, not so much if it is called multiple times. So I could see arguing against compile time data in a service program, but not necessarily in a program. After all, isn't:

dcl-s OkList Char(7) Dim(5) Ascend CTData;

If %Lookup(ErrorReturn.MessageId:OkList) > 0;

...

**CTData OkList
CPF3C51
CPF3C52
CPF3C53
CPF3C54
CPF3C55

A little more idiomatic for RPG (easier for an RPG programmer to understand at a glance)






-----Alan Campin <alan0307d@xxxxxxxxx> wrote: -----
To: "RPG programming on the IBM i (AS/400 and iSeries)" <rpg400-l@xxxxxxxxxxxx>
From: Alan Campin <alan0307d@xxxxxxxxx>
Date: 07/28/2017 09:38PM
Subject: Re: This is cool.


Are there even "O" specs anymore in 100% free and Main programs? I don't
think so and the problem with the old compile type arrays is that you are
talking static storage that gets initialized when the module starts and
stays there until the program or activation group ends.

On Fri, Jul 28, 2017 at 5:53 PM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

If I am understanding it, this is essentially moving an array's data to
where the array is defined instead of following the "O" specs? Which is,
indeed, cool. Although I admit to also liking Jon/Sue's solution for
messages at the end of the article he linked earlier.



On 7/28/2017 6:38 PM, Nathan Andelin wrote:

The syntax may not be clear on first blush, but looks pretty slick once
you
understand it.


On Fri, Jul 28, 2017 at 12:03 PM, Alan Campin <alan0307d@xxxxxxxxx>
wrote:

dcl-ds *N;

*N Char(7) Inz('CPF3C51');
*N Char(7) Inz('CPF3C52');
*N Char(7) Inz('CPF3C53');
*N Char(7) Inz('CPF3C54');
*N Char(7) Inz('CPF3C55');
OkList Char(7) Dim(5) Pos(1) Ascend;
end-ds;


If %Lookup(ErrorReturn.MessageId:OkList) > 0;

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