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Free-format RPG IV : the express guide to learning free format /
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-f...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Boise, Idaho :
MC Press Online, LLC,
2015.
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| Edición: | Third edition. |
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Title Page; Copyright; Dedication; Acknowledgments; Contents; Preface to the Second Edition; A Note About Source Entry; Chapter 1: Pre-Free-Format RPG IV; RPG IV .; Extended Factor; Built-in Functions; Subprocedures; Other Changes; Some "Baggage" That Came Along; The Future; Chapter 2: The Case for Free-Format RPG; Easier to Read and Maintain; Good Field Naming; Indenting; Use of Comments; No Goto Operations; Conclusions; A "Modern" Programming Style; Free-Format RPG IV and C; Free-Format RPG IV and Java; Conclusions; Being "Current"; The Programmer's Perspective.
- Management's PerspectiveConclusions; Check It Out; Chapter 3: Free-Format H, F, D, and P Specifications; The H (Control) Specification; The F (File) Specifications; The D (Definition) Specifications; The P (Procedure) Specification; Conclusions; Chapter 4: Introducing Free-Format RPG IV; Coding Free-Format Calculations; Naming Variables; Programming Style; A Note About Case; Free-Format Operation Codes; Evaluate; If; Controlled Looping; Mathematics; Character Strings; Programming Style Issues; Mixing Formats; Keyed Access; Named Indicators; Naming File Indicators; Summing Up.
- Chapter 5: Input/Output Using Free FormatDatabase Input; %Eof; %Found; %Error; %Equal; Data Area Input; Database Output; Write; Update; Delete; Except; Workstation I/O; Write/Read; Write; Read; ICF I/O; Dsply; Printer Output; Overflow Indicator; Write; Except; Chapter 6: Program Flow Using Free Format; The If Group; If; Else; Elseif; Endif; The Do Operations; Do While; Do Until; Dow and Dou Differences; For; Loop Interrupt.; Leave; Iter; The Select Group; Select; Operations Absent in Free Format; Chapter 7: Embedded SQL Operations Using Free Format; Database and Embedded SQL.
- Fixed-Format MethodFree-Format Method; Chapter 8: Data-Manipulation Operations Using Free Format; Assignment Statements; Eval Operation: Numeric; Eval Operation: Character; Evaluate Right (EvalR) Operation; Eval Operation: IS, OC; Evaluate vs. Move; Built-in Functions; Converting Decimal to Character; Converting Character to Packed Decimal; Substringing; Replace; Scan and Replace; Concatenation and Trim; Converting Character to Integer; Extracting Size, Length, and Decimal Positions; Number of Elements; Looking for Something?; String Translation; Combining Built-in Functions.
- Date and Time OperationsConverting Numbers to Date and Time; Converting Date and Time to Character or Decimal; Date and Time Arithmetic; Chapter 9: Math Operations in Free Format; Expressions in Assignment Statements and Elsewhere; Four-Function Math; Short-Form Math; Exponentiation; Precedence; Mathematical Expressions Elsewhere; Eval Differences in Fixed and Free Format; Naming Variables; Semicolon; Free-Format Math in RPG IV; Numeric Data Types; Changing Data Type; Chapter 10: Call and Return in Free Format; Call Prototyped (CallP) Operation; Dynamic Call; Bound Call.