RPG IV Style for the 21st Century

I’ve often postulated that few computer languages are changing as fast as RPG. Although it originated more than 50 years ago, RPG has evolved from a punch card heritage to a fully featured language that drives many modern business applications, in only a little more than a decade.

But has your programming style kept pace with RPG’s evolution? It was only a few short years ago when I first wrote an RPG IV style guide and, despite my attempts to update it since then, my old, comfortable approaches to style, standards, and best practices get more outdated with every new release.

“It’s possible to become so comfortable with one’s style and structure that one ceases to grow.” — Lynn Abbey, American author

Here is the latest PDF version of the style guide, from the book, “Programming in ILE RPG (5th edition).”