Ready-To-Run RPG/400 Techniques

Table of contents

Introduction
Using This Book
Style Guidelines
CD-ROM Contents
Effective RPG/400 Error Handling
Advanced Error Handling
Gracefully Handling Unexpected Errors
Using the File Information Data Structure
Declaring Data Types
Mapping Externally Described Fields to Array Elements
Sorting Arrays
Searching Arrays
Multidimensional Arrays
Dynamically Determining Keypresses
Getting and Setting the Cursor Position
Using Named Indicators with Interactive Programs
Using a Message Subfile to Display Error
Messages
Using Data Structures as Program Parameters
Ending Interactive Programs Automatically
Basic String Operations
Determining a Field's Logical Data Length
Padding a String with Trailing Blanks
Trimming Trailing Blanks from a String
Converting the Case of a String
Substring and String Concatenation Operations
Extracting a Part of a String
Concatenating Strings
Justifying and Centering Strings
Right-Justifying a String
Left-Justifying a String
Centering a String
Searching Strings
Finding Leftmost Occurrences of a String
Value
Finding Rightmost Occurrences of a String
Value
Determining the Size of a Field
Editing Numeric Fields
Reformatting Numeric Data
Reformatting Dates
Doing Date Arithmetic
Exponentiation in RPG
Using User Spaces
Using List APIs
File Maintenance Without Record Locks
Appendix A Getting the Most from /COPY
Appendix B String Functions Test Program
Appendix C RPG Reference
Control Specifications
File Specifications
Extension Specifications
Line Counter Specifications
Input Specifications
Calculation Specifications
Output Specifications
Opcodes
RPGSpecial Words
RPG Restrictions
Error Handling