RPG/400 Archives - IT Jungle

Guru: Flexible Interfaces

November 1, 2021 Ted Holt

The details are murky, it’s been eons ago. Probably the mid-1990’s. I was working on an AS/400 that ran a mixture of System/36 and native applications. I needed to call a program that had been written in the latest version of RPG from both S/36 RPG II and native RPG III (a.k.a. RPG/400) programs. I hope I’m remembering this correctly. It’s been so long.

The problem I ran into was rooted in a numeric parameter. S/36 programs passed numeric parameters in zoned decimal format, whereas native RPG and CL programs used packed decimal. The called program defined the parameter as …
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VS Code Provides Another Coding Option for IBM i

December 9, 2020 Alex Woodie

IBM i shops that are looking for an alternative to IBM’s Rational Developer for IBM i (RDi) may want to check out a lightweight code editor from Microsoft called Visual Studio Code (VS Code). Thanks to extensions for IBM i languages developed by the opensource community, VS Code can support native development in RPG, CL, and SQL.

First released by Microsoft in 2015, VS Code provides a basic environment for writing and editing code. It features debugging, syntax highlighting, intelligent code completion, snippets, and code refactoring, as well as embedded Git. It runs on Windows, Linux, and Mac, and while …
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Is It Time To Rename RPG?

August 24, 2020 Alex Woodie

Should IBM rename RPG, and if so, what should the new name be? It’s an interesting idea, and one that was recently floated by a member of the IBM i community, who submitted an official request for enhancement (RFE) on the matter. The crux of the argument is that full free-format RPG is such a dramatic departure from fixed-format RPG that it deserves a new name. But will IBM, which owns the language, go along with the change?

Report Program Generator, or RPG, debuted way back in 1959, at the dawn of the computer age, as a way to replicate …
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Guru Classic: The Efficiency of Varying Length Character Variables

August 14, 2019 Jon Paris

Remember the bad old days when dinosaurs still roamed the earth and the only way to build strings in RPG involved playing silly games with arrays? Or worse still, obscure combinations of MOVE operations? Thankfully those days are far behind us — although sadly there are still a few RPG/400 dinosaurs coding away!

RPG IV introduced many powerful new string handling options, such as the %TRIMx family of BIFs, but even now there are capabilities in the language that few programmers fully exploit. One of my favorites is variable length fields. This lack of familiarity made this tip an obvious …
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Guru: Flexible Interfaces

VS Code Provides Another Coding Option for IBM i

Is It Time To Rename RPG?

Guru Classic: The Efficiency of Varying Length Character Variables

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