RPG III (RPG/400) to RPG IV and ILE

4 Day Course

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Classroom Virtual Classroom Private Group - Virtual Self-Paced Online


The course introduces RPG IV and ILE from the point of view of experienced RPG III (RPG/400) programmer. There are extensive hands-on exercises. On completion of the course, participants should be able to take full advantage of the benefits of RPG IV and ILE.

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RPG IV 101 (10 topics)

  • Background
  • Conversion Options
  • Format and Limit Changes
  • Data Types
  • H-Spec
  • F-Spec
  • D-Spec (Overview)
  • C-Spec
  • I-Spec and O-Spec
  • Freeform RPG

D Specs (7 topics)

  • Data Structures
  • Arrays
  • Stand Alone Fields
  • Replacing RPG Indicators
  • The Indicator Data Structure
  • Qualified Data Structures
  • Data Structure Arrays

Expressions (4 topics)

  • Arithmetic Expressions
  • Character Expressions
  • Logical Expressions
  • Precision Rules

Built In Functions (BIFs) (2 topics)

  • Using BIFs
  • Types of BIFs

Dates, Times and Timestamps (3 topics)

  • Defining
  • Moving
  • Calculating Durations

Prototyped Calls (4 topics)

  • Prototypes
  • Structure
  • Useful Keywords
  • Procedure Interface

Subprocedures (Part 1) (3 topics)

  • P-Spec
  • Structure
  • Subprocedure Vs Subroutine

Introduction to ILE (4 topics)

  • Static Binding Vs Dynamic Binding
  • Bind By Copy
  • Bind By Reference
  • Service Programs

Subprocedures (Part 2) (2 topics)

  • Subprocedures Vs Called Programs
  • NOMAIN Modules

ILE – Other Topics (3 topics)

  • Binding Directories
  • Binder Language
  • Activation Groups


Before taking this course, a student should: Have at least six months experience of programming in RPG III A knowledge of the modern development environment (WDSC/RSE/Rdi) would be advantageous available through WDSC/RSE/RDi for Programmers

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