The content has also undergone a comprehensive update to provide fresh code examples and bring the book in line with the latest version of the language. All-new programming exercises and assignments add even more value for learning. The book includes complete coverage of the program development process, RPG IV specifications and operations, creating and using files, program workflow and structured design, arithmetic operations and functions, accessing and updating database files, writing interactive applications, modular programming, service programs, error handling, subfiles, APIs, and more.
You'll learn all the essential features of RPG IV, including specifications, free-form expressions, operations and built-in functions. Traditional fixed-format style RPG IV programmers everywhere are embracing the increased productivity, better readability, and easier program maintenance that comes with the free-format style of programming in RPG IV. This book, a "how-to" guide and the first of its kind, will provide you with concise and thorough information on this powerful new way of coding RPG IV.
Though free-format information is available in IBM manuals, it is not separated from everything else, thereby requiring hours of tedious research to track down the information you need.
Author Jim Martin not only teaches rules and syntax, but also explains how this new style of coding has the potential to improve overall programmer productivity—from initial development through maintenance. He methodically covers the "how to" involved in free-format RPG IV, including many style issues, such as named indicators and built-in functions.
He also addresses input and output, program flow, data manipulation, and math operations. There is even a chapter on prototyping and APIs. Free-Format RPG IV is the definitive guide on the topic and just what you need to get started with this exciting, powerful style of programming.
With Free-Format RPG IV you will: - Learn not only the "how-to," but also the "why" of free-format RPG IV - Acquire essential, free-format style tips to help you write good, maintainable code - Find complete-program solutions for specific problems, including associated display and printer files - Discover how upgrading your RPG skills to free-format can take your programming career to the next level.
Free-form calculation specifications, new built-in functions, improved error handling, and more -- all the V5 goodies are in here, demystified through clear explanations and numerous coding examples. You'll see the new free-form coding at work throughout the book. Best of all, a new appendix provides a complete, integrated reference to every one of RPG IV's opcodes and BIFs -- a resource even veteran programmers will appreciate. This book is intended to help developers understand what modern RPG looks like and how to move from older versions of RPG to a newer, modern version.
Using modern tools, methodologies, and languages are key to continuing to stay relevant in today's world. Being able to find the right talent for your company is key to your continued success. Using the guidelines and principles in this book can help set you up to find that talent today and into the future. This publication is the result of work that was done by IBM, industry experts, business partners, and some of the original authors of the first edition of this book.
This information is important not only for developers, but also business decision makers CIO for example to understand that the IBM i is not an 'old' system.
IBM i has modern languages and tools. It is a matter of what you choose to do with the IBM i that defines its age. Providing solutions to dozens of technical dilemmas, this guide features tips for evaluating and circumventing RPG IV's shortcomings to help end users create extensions and program features that are not available through standard RPG IV—the primary programming language used for business application development on IBM's midrange computer systems.
Sporting a new organization reflecting the best methods, as currently recognized, for teaching and learning the language, the book has been updated throughout for the latest software version. The new edition features a completely revamped chapter structure to enable the RPG programming language to be taught more effectively in both classroom and individualized learning settings. Logging in Remember me. Log in. Forgot password or user name?
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