Updating any numeric DTAARA in RPGLE is slightly different in RPG /FREEFORMAT than in the good old fashioned column based RPG/400. Using RPG ILE, data structures are treated as character data. The nature of a data area is that its a string of data that can contain a mixture of various data formats. If we […]
More WaffleIBM i , Programming , RPG
This is purely a little memory jogger for me. Nothing to read here move along move along….. I just upgraded an old program that had a piece of code doing this: C DS#POS Div 256 POSLIN C Mvr POSCOL This old RPG400 code is reading the cursor position from the display […]
More WaffleAS400 , IBM i , iSeries , Programming , RPG , SQL
I’ve been involved in some heavy RPG modernization projects recently. Ranging from application replacements, to middleware webservice integrations to light code dusting…. I enjoy it all, just a little too much! Forget Alcoholics Anonymous, I should attend a software modernization addicts meetings where AA = AS400 Anonymous “Yes my name is Nick Litten and I […]
More WaffleIBM i , Programming , RPG , SQL
Following on from my previous blog (basic email validation) I decided that it would much nicer to (a) have the regex stored in a data area so that we can easily play with it to try different validation scenarios and (b) lets have a shot at a much stricter validation because there is an official […]
More WaffleIBM i , Programming , RPG , SQL
There are lots of code snippets, example programs and long waffling discussions in internet land filled with pointy headed AS400, iSeries and IBM i programmer chaps (and chappettes) arguing about the best way to “validate an email address in RPG”. I know because I’ve read nearly all of them, as well as tried all the […]
More WaffleIBM i , AS400 , Programming , RPG
RPG INDICATORS are switches Just like car indicators (or ‘blinkers’ as my American cousins call them) they can be switched *ON or *OFF in a program to indicate the state of a certain piece of logic. In the IBM RPG language, it used to logically flick the switch of a numeric indicator 01-99 to “indicate” […]
More WaffleIBM i , Programming , RPG
AKA – writing a new DSPLY opcode that shows more than 52 characters Using the DSPLY opcode to quickly debug a program has long been a staple of us RPG keyboard whackers. The DSPLY operation lets us “display the data in a variable” onto the screen. Everyone uses this quick and dirty technique and everyone […]
More WaffleIBM i , AS400 , iSeries , Programming , RPG
I found this article ages ago and book marked it. I just re-read it and found it just as pertinent today as when it was written 15+ years ago! Tips to reduce static storage The variables in an ILE RPG module or program can be divided into three storage (memory) classes: static, automatic, and heap […]
More WaffleIBM i , AS400 , iSeries , Programming , RPG
I’ve been waiting for a simple free-format RPG editor for the longest time. Opensource ILEditor delivers. It’s free, open source, actively maintained and growing in support. It’s quick and simple to use, and I can already see that as it’s popularity grows new functions will be easy to add. #nice The Author is Liam Allen […]
More WaffleIBM i , Programming , RPG , SQL , Webservice
Debugging RPG Webservices can be a pain in the proverbial; finding the IBM i background jobs that are running the REST Service, starting job service mode to get at the program variables and then discovering that the program was not compiled with DBGVIEW(*SOURCE) so you cant see the variables anyway. #aaaargh Debugging IBM i Webservices […]
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