JSON vs XML vs CSV These acronyms can sound like an alien language to people learning to become programmers and especially to established old-school green screen programmers (with the greatest respect to my AS400 and iSeries colleagues) Don’t worry – all these new terms can be totally baffling! Let’s break them down into simple explanations:

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Yesterday, I wrote a little SQLRPGLE web-service program to retrieve System21 Picking details . Days like this I really enjoy my job. Writing new programs in RPG is fun, good old fashioned fun. It ran perfectly with the handful of test data that I had to play with. But today I am testing it and

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In the 1980’s and 1990’S the source code editor was a text based green screen tool (PDM/SEU) which is still in use at AHP today. This text based editor does not syntax check any of the new programming languages nor does it allow more than 20 lines of source code to be displayed at any

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What is Legacy Code? I’ve always thought LEGACY it was the correct terminology for old fashioned RPG source code. For years I’ve been focused on refactoring old column based RPG “legacy” code into new “modern” RPGLE code. But it seems that I’ve been guilty of using the wrong words all this time. I just read

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