Note: The code accompanying this article is available for download here.

I was wondering if you have come across any techniques using subprocedures to simulate associative arrays in RPG IV. I’ve just started experimenting with the idea. I’d like to create dynamic associative arrays using service programs and user indexes.

–Steve

As a matter of fact, I had thought about implementing associative arrays in RPG, Steve. I’ll share my thoughts on that topic. But first, let me talk about wondering.

I do a lot of wondering. You’ve seen the results of many of my wonderings in previous issues of

Dear Colleagues:

It’s hard to believe that another year is coming to an end, but it’s happening yet again. Let’s wind up 2012 with some odds and ends. I hope you find something useful.

In response to Message Received, But Not Understood, Michael wrote:

I have used the CMPDTA parameter on the MONMSG command to provide this filter. See CPF2817.

Here is an illustration of Michael’s suggestion:

CPYF       FROMFILE(&FRLIB/&FRFILE) +
             TOFILE(&TOLIB/&TOFILE) FROMMBR(&FRMBR) +
             TOMBR(&TOMBR) MBROPT(*REPLACE) CRTFILE(*NO)
MONMSG     MSGID(CPF2817) CMPDTA(CPF2861) EXEC(DO)
   /* to-file doesn't exist */
   /* do something */
ENDDO
MONMSG     MSGID(CPF2817) CMPDTA(CPF2869) EXEC(DO)
   /* from-file is empty */
   

Power i operating system commands are like old friends. You think you know everything about them, then one day they surprise you by displaying a different side of themselves. This week, let’s look at a few hidden parameters available with the i OS Submit Job (SBMJOB) command. These parameters can help you perform some new tricks you may not have thought of.

Non-Obvious Candidates

Everyone knows the standard SBMJOB parameters such as Job Name (JOB), Job Description (JOBD), and Job Queue (JOBQ). But if you search the Additional Parameters section of the Submit Job command (available by pressing F10 from