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My mate Toby sent me this email: I love RDI … But I do come across one issue that I’m sure you can sort out… using SEU if I wanted to find the start of a subroutine, I always made them # something like #Clr or #Bld etc. and there was only 1 place in …
AS400, IBM i, iSeries, Programming, RPG
How to use ‘Conditional Selection in RPGLE and CLLE’ Way back in 2008, I wrote this blog about how to do various condition selection in RPG. So, I suppose it time to modernize those code examples in modern RPGLE Free, tidy it up, and add the same code examples in CLLE. In RPGLE (and in …
What are single page subfiles? A single page subfile is a SCREEN OF DISPLAYED DATA, loaded one page at a time. The displayed data is equal to the maximum number of records that can be displayed at a time. In other words, in a single page subfile, all loaded records are displayed at a time. …
AS400, IBM i, iSeries, Programming, RPG
Built-In Functions in RPGLE – %EOF & %FOUND %EOF(filename) This built-in function is used to detect end-of file, beginning of file, or subfile full conditions while performing a file operation. Rather than using indicators, we should use %EOF to check if the end of file is reached. %EOF returns ‘1‘ if end-of file, beginning of file, …
IBM i, Programming, RPG, SQL
Let’s look at a quick little example RPG email validation program – SQLRPGLE ILE There are lots of code snippets, example programs, and long waffling discussions in internet land filled with pointy-headed AS400, Series, and IBM i programmer chaps (and chappettes) arguing about the best way to “validate an email address in RPG”. I know …
AS400, IBM i, iSeries, Programming, RPG
Whenever I find myself editing some old RPG3 or RPG400 code, I try to spend a coffee* cleaning the code up to a more modern and readable form. * A ‘coffee’ is the amount of time it takes to drink a regular cup of brew. This is slightly shorter than the English standard time unit …
This morning my nerdish IBM-i Chum Toby, pinged me a whatsapp challenge to write a little RPG code snippet to “extract invoice numbers” from a random string of data. So…. if you had a string ‘INV#10563592 DATED 12/17/19 SO#286045 NOT GOING’ and you knew that this is a shitty text file way of referencing an …
What is IBM i HTTPAPI? HTTPAPI is an IBM i library (LIBHTTP) containing a full set of API’s allowing any IBM i programmer to write webservices to read, write and tinker (those are technical terms) with cloud based applications. For example, you could use the HTTPAPI library to easily add some code to an RPG …
AS400, IBM i, iSeries, Programming, RPG
Developerworks Connections is dead As I was waffling this morning about the sad demise of IBM Developerworks Connections Wiki – here is another excellent article that discusses various extensions to IBM Rational Developer for IBM i – How to Extend RDi (#RDi) So here it is, re-posted before IBM can hide this wonderful source of …
AS400, IBM i, iSeries, Programming, RPG
I was discussing the benefits of RDi with a colleague this morning (I’m a bit of a Rational Developer fanboy) because he is trying to justify the huge annual cost of the tool with The Management: nearly $1000 per year per person! A price tag that is #bloodypreposterous. But, I will rant about that in …
Numeric Data Areas are a little trickier than Alphameric 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 …
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 …