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Author: Richard Shaler Publisher: MC Press ISBN: 9781883884567 Category : RPG IV (Computer program language) Languages : en Pages : 0
Book Description
Aimed at the experienced RPG programmer, this book addresses the difference between RPG III and RPG IV so that you can quickly become a productive RPG IV programmer. It contains extensive code examples that compare the two RPG languages and introduces the ILE capabilities that can be used to your advantage. Topics covered include how to use keyword-style H-specs and F-specs, as well as how to use the new D-specs to define tables, arrays, data structures with subfields, standalone fields, and data areas. The authors cover the changes to I-specs and O-specs and explain how you can improve your productivity with the free form EVAL, IF, DOW, and DOU operations. This book also contains an introduction to date, time, and time-stamp data types, as well as date arithmetic. It also shows you how to realize program performance improvements for bound calls.Based on the authors' previous title, ILE RPG for RPG/400 Programmers, this new book provides even more powerful information to quickly help you become productive in RPG IV. All of the new Version 4 capabilities of the RPG IV language and ILE are covered. There are two new chapters on subprocedures: One chapter explains why the powerful new capabilities of subprocedures that let you break modules down into multiple procedures are so important, and another chapter shows you, by example, how to code the P-specs that make it all possible. The chapter on conditional compiler objects shows you how the old directives have been enhanced and what new directives are available. In addition, there is new information on implementing object-oriented (OO) concepts in RPG. With the industry quickly moving toward OO programming, it is crucial that RPGprogrammers keep up to date on this powerful concept and understand how it applies to modern RPG IV constructs.Appendices include utilities and programs that you can add to your copybook and learn from: changing case with RPG IV subprocedures, converting numbers to words, recursive programming, and exception and error codes. Plus, another new appendix features the limit changes for RPG IV defined.
Author: Richard Shaler Publisher: MC Press ISBN: 9781883884567 Category : RPG IV (Computer program language) Languages : en Pages : 0
Book Description
Aimed at the experienced RPG programmer, this book addresses the difference between RPG III and RPG IV so that you can quickly become a productive RPG IV programmer. It contains extensive code examples that compare the two RPG languages and introduces the ILE capabilities that can be used to your advantage. Topics covered include how to use keyword-style H-specs and F-specs, as well as how to use the new D-specs to define tables, arrays, data structures with subfields, standalone fields, and data areas. The authors cover the changes to I-specs and O-specs and explain how you can improve your productivity with the free form EVAL, IF, DOW, and DOU operations. This book also contains an introduction to date, time, and time-stamp data types, as well as date arithmetic. It also shows you how to realize program performance improvements for bound calls.Based on the authors' previous title, ILE RPG for RPG/400 Programmers, this new book provides even more powerful information to quickly help you become productive in RPG IV. All of the new Version 4 capabilities of the RPG IV language and ILE are covered. There are two new chapters on subprocedures: One chapter explains why the powerful new capabilities of subprocedures that let you break modules down into multiple procedures are so important, and another chapter shows you, by example, how to code the P-specs that make it all possible. The chapter on conditional compiler objects shows you how the old directives have been enhanced and what new directives are available. In addition, there is new information on implementing object-oriented (OO) concepts in RPG. With the industry quickly moving toward OO programming, it is crucial that RPGprogrammers keep up to date on this powerful concept and understand how it applies to modern RPG IV constructs.Appendices include utilities and programs that you can add to your copybook and learn from: changing case with RPG IV subprocedures, converting numbers to words, recursive programming, and exception and error codes. Plus, another new appendix features the limit changes for RPG IV defined.
Author: Jim Martin Publisher: MC Press ISBN: 9781583474136 Category : Computers Languages : en Pages : 0
Book Description
Focusing strictly on teaching free-format RPG programming methods, this book will help programmers wishing to upgrade their skills This how-to guide offers a concise and thorough introduction to the increased productivity, better readability, and easier program maintenance that comes with the free-format style of programming in RPG IV. Although free-format information is available in IBM manuals, it is not separated from everything else, requiring hours of tedious research to track down the information needed. This book provides everything you need to know to write RPG IV in the free-format style. Author Jim Martin not only teaches rules and syntax, but also explains how this modern style of coding has the potential to improve overall programmer productivity--from initial development through maintenance. He methodically covers the many style issues, such as named indicators and built-in functions, and addresses topics including input and output, program flow, data manipulation, math operations, prototyping, and APIs. This third edition is updated to V7.1 of the IBM i operating system on IBM Power machines. An added chapter explains the new free-format H, F, D, and P specifications introduced by IBM in Technology Refresh 7, and programming examples throughout the book are updated to reflect the new specifications.
Author: Rich Diedrich Publisher: IBM Redbooks ISBN: 0738442100 Category : Computers Languages : en Pages : 412
Book Description
Application development is a key part of IBM® i businesses. The IBM i operating system is a modern, robust platform to create and develop applications. The RPG language has been around for a long time, but is still being transformed into a modern business language. This IBM Redbooks® publication is focused on helping the IBM i development community understand the modern RPG language. The world of application development has been rapidly changing over the past years. The good news is that IBM i has been changing right along with it, and has made significant changes to the RPG language. 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. Additionally, it covers the basics of Integrated Language Environment® (ILE), interfacing with many other languages, and the best tools for doing development on IBM i. 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.
Author: Paul Conte Publisher: System iNetwork ISBN: 9781882419708 Category : Computers Languages : en Pages : 548
Book Description
IBM and the rest of the computer industry are putting most of their DBMS development efforts into SQL. This reference provides the SQL/400 skills that a successful applications developer needs and shows how to create comprehensive, complex, and professional SQL/400 databases.
Author: George Farr Publisher: 29th Street Press ISBN: Category : Computers Languages : en Pages : 526
Book Description
Covering all areas of RPG programming, this book goes beyond explaining the differences between RPG III and RPG IV. The authors provide practical application examples to illustrate RPG IV's new capabilities. New features and functions include new specifications; date, time, timestamp, and pointer data types; built-in functions, free-form expressions, new keywords, and new operations. Examples also show how to improve programming efficiency in RPG IV. RPG IV by Example focuses on application situations familiar to experienced programmers. RPG IV by Example is an invaluable coach for any RPG programmer at any experience level. Longtime programmers will find out how RPG IV lets you continue to take advantage of tried-and-true methods while adopting important timesaving capabilities. RPG newcomers will learn from examples how to create RPG IV applications. The emphasis is on practical solutions that programmers need every day. The authors integrate this information into 15 chapters featuring discussions of data definition, database file processing, arithmetic and move operations, indicator functions, structured programming, array and table processing, pointer functions, and ILE and non-ILE program calls.
Author: Jim Buck Publisher: MC Press ISBN: 9781583473580 Category : Languages : en Pages : 0
Book Description
Covering the basics of Control Language (CL) programming as well as the latest CL features--including new structured-programming capabilities, file-processing enhancements, and the Integrated Language Environment--this resource is geared towards students learning CL. The book guides readers towards a professional grasp of CL techniques, introducing complex processes and concepts through review questions, hands-on exercises, and programming assignments that reinforce each chapter's contents. In addition to 25 chapters that cover CL from start to finish, a comprehensive appendix with condensed references to the most commonly used CL commands is also included along with two additional appendixes that cover the essentials of programming tools and debugging.
Author: David Shirey Publisher: MC Press ISBN: 9781583474051 Category : Computers Languages : en Pages : 0
Book Description
This guide teaches programmers who have been left behind in the IBM i's evolution to code more productively and modernize their business applications. Shirey uses a casual, humorous teaching style to explain the concepts, along with plenty of code examples. Readers will gain confidence in areas that may be new to them and use the provided examples to practice what they've learned. The manual is structured so that whether they are using the latest IBM i technology or an older version, readers will learn methods to improve coding and applications, as well as become comfortable with writing programs using ILE RPG, free-format RPG, and Model-View-Controller (MVC).
Author: Richard Shaler
Author: Richard Shaler
Author: Robin Klima
Author: Jim Martin
Author: Rich Diedrich
Author: IBM Redbooks
Author: Paul Conte
Author: George Farr
Author: Robert Cozzi
Author: Jim Buck
Author: David Shirey