eBook - ePub

Evolve Your RPG Coding: Move from OPM to ILE ... and Beyond

Name: Evolve Your RPG Coding: Move from OPM to ILE ... and Beyond
Author: Rafael Victória-Pereira

Rafael Victória-Pereira,

English
ePUB (mobile friendly)
Available on iOS & Android

eBook - ePub

Evolve Your RPG Coding: Move from OPM to ILE ... and Beyond

Rafael Victória-Pereira,

About this book

If you still write RPG code as you did 20 years ago, or if you have RPG ILE on your resume but don't actually use or understand it, this book is for you. It will help you transition from the Original Programming Model (OPM) to a more modern, modular, and efficient RPG ILE. With this book, each concept of ILE is made accessible. You will start by taking baby steps with small, easily understandable examples, and build to more complete and complex pieces of code. All the while, you will explore each component of modern RPG, learning how it fits with the other pieces to gain the full RPG ILE picture. By its nature, this book is not an ILE quick-reference guide. Rather, it is a "slow reference guide." It introduces new concepts with analogies to OPM whenever possible, explaining and expanding with realistic scenarios of increasing complexity (like inventory management programs, for instance). The book also goes beyond ILE, with comprehensive chapters about SQL and code organization and structure. Then it goes even further--the final part of the book is dedicated to Modernization: * It shows what can be modernized in your legacy applications and how to do it; * Explains different approaches to the issue, discussing the pros and cons of each one; and * Sets a few sound guidelines and offers advice on how to proceed, based on the author's and other several experts' experience. By the end of the book, you'll be a better programmer. You'll have new tools, new approaches, and most importantly, new ideas, to solve those problems big and small that are the life of an RPG programmer. Upon completion of this book, you will be able to: * Migrate your OPM code to ILE RPG in a structured and easier-to-maintain way. * Write code in free-format RPG. * Use built-in functions to solve hard-to-tackle and/or time-consuming issues. * Get a comprehensive knowledge about SQL and how it can be useful to an RPG programmer. * Learn about SQL's stored procedures and user-defined functions concepts and how to use them to modernize your application. * Understand the possibilities that embedded SQL in RPG offers. * Use SQL cursors to replace OPNQRYFs. * Understand how you can modernize your legacy applications. * Use SQL's Data Definition Language to replace DDS-defined physical and logical files, which can bring system performance and programmer productivity gains. * Learn about the MVC and how it can help revolutionize your application's user interface. * Become a "modern RPG" programmer, with a new set of skills and tools.

Frequently asked questions

Yes, you can cancel anytime from the Subscription tab in your account settings on the Perlego website. Your subscription will stay active until the end of your current billing period. Learn how to cancel your subscription.

At the moment all of our mobile-responsive ePub books are available to download via the app. Most of our PDFs are also available to download and we're working on making the final remaining ones downloadable now. Learn more here.

Perlego offers two plans: Essential and Complete

Essential is ideal for learners and professionals who enjoy exploring a wide range of subjects. Access the Essential Library with 800,000+ trusted titles and best-sellers across business, personal growth, and the humanities. Includes unlimited reading time and Standard Read Aloud voice.
Complete: Perfect for advanced learners and researchers needing full, unrestricted access. Unlock 1.4M+ books across hundreds of subjects, including academic and specialized titles. The Complete Plan also includes advanced features like Premium Read Aloud and Research Assistant.

Both plans are available with monthly, semester, or annual billing cycles.

We are an online textbook subscription service, where you can get access to an entire online library for less than the price of a single book per month. With over 1 million books across 1000+ topics, we’ve got you covered! Learn more here.

Look out for the read-aloud symbol on your next book to see if you can listen to it. The read-aloud tool reads text aloud for you, highlighting the text as it is being read. You can pause it, speed it up and slow it down. Learn more here.

Yes! You can use the Perlego app on both iOS or Android devices to read anytime, anywhere — even offline. Perfect for commutes or when you’re on the go.
Please note we cannot support devices running on iOS 13 and Android 7 or earlier. Learn more about using the app.

Yes, you can access Evolve Your RPG Coding: Move from OPM to ILE ... and Beyond by Rafael Victória-Pereira in PDF and/or ePUB format, as well as other popular books in Computer Science & Programming Languages. We have over one million books available in our catalogue for you to explore.