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RPG TnT

101 Dynamite Tips 'n Techniques with RPG IV

MC Press

Contents

Title Page, 
Copyright Page, 
Dedication, 
Acknowledgments, 
Conventions Used in this Book, 
1 - Prototype Everything, 
2 - Prototyping a Call to a Program, 
3 - An Alternative to QCMDEXC, 
4 - Subprocedure-style Entry Parameter List for Programs, 
5 - Add NOMAIN to the Header Specification of Secondary Modules, 
6 - Monitoring C Function Runtime Errors, 
7 - Use PSDS to Retrieve Job Information, 
8 - Use QUALIFIED Data Structures, 
9 - Copy Subfields Between Qualified Data Structures, 
10 - Nested Data Structures, 
11 - *ALL and *ALLX 'xx' — The Repeating Constants, 
12 - Embed Compiler Parameters into Source Members, 
13 - Avoid "Surprise Initialize", 
14 - Qualified Externally Described Files (1), 
15 - Qualified Externally Described Files (2), 
16 - Calculate the End-of-Month Date, 
17 - Using Free-Format Comments in Fixed-Format Code, 
18 - Get Day-of-Week Name, 
19 - Run CL Commands from an FTP Client, 
20 - Put Your Program to Sleep, 
21 - Use VARYING to Improve Performance, 
22 - Converting Numeric to Character with %CHAR, 
23 - Converting Character to Numeric, 
24 - Easier Text Concatenation, 
25 - Create an Auto-Extend User Space, 
26 - Declare Data Structures as Arrays, 
27 - Initialize Fields to Job Date, System Date, or User Profile, 
28 - Use C Runtime Functions in RPG, 
29 - Compare and Ignore Case, 
30 - Free Online Prototypes for APIs, C Functions, MI Instructions, 
31 - Checking for Valid Dates with the TEST OpCode, 
32 - Using the Secret 'X' Edit Code to Convert Numeric to Character, 
33 - %ADDR — Address of a Variable, 
34 - Understanding API Documentation — Bin(4) Parameters, 
35 - Understanding API Documentation — Pointer Parameters, 
36 - Better Performance when Accessing User Space Data, 
37, 
38 - Sending a Program Message in RPG, 
39 - Retrieve the Function Key Used on a Display File, 
40 - Copying More than 64k of Data, 
41 - Use %XFOOT with %LEN, 
42 - Use %SUBARR to Subscript Arrays, 
43 - Use EXTFILE to Avoid Needless Overrides, 
44 - Subprocedure Parameters Rule 1 — Default Behavior, 
45 - Subprocedure Parameters Rule 2 — CONST Parameters, 
46 - Subprocedure Parameters Rule 3 — VARYING, 
47 - Subprocedure Parameters Rule 4 — Optional Parameters, 
48 - Subprocedure Parameters Rule 5 — Skipping Parameters, 
49 - Data Structure Templates, 
50 - Boolean Assignment, 
51 - Creating Even-Length Packed Fields, 
52 - Sorting Arrays with SubArrays, 
53 - Convert between Lower- and Uppercase Letters, 
54 - Overlapping Data Structures, 
55 - Dynamic Arrays — Dynamically Allocated Array Elements, 
56 - Converting Date Formats with the QWCCVDT API, 
57 - Converting Date Formats with the CEExxxx APIs, 
58 - Calculated Day of Week — Zeller's Congruence, 
59 - Calculated Day of Week — API Method, 
60 - LIKE Keyword Misbehavior — Zoned to Packed, 
61 - Default Data-type: Not So Consistent, 
62 - Debugging Variables that Have Debugger Command Names, 
63 - Viewing Field Contents in Hex in Debug, 
64 - Display the First Few Bytes During Debug, 
65 - Display Contents of Local Variables with %LOCALVAR, 
66 - Convert Character to Numeric — Using MI, 
67 - Converting To and From Hexadecimal, 
68 - Using Decimal Fields as Real-Date Values, 
69 - Check Object Existence, 
70 - Supporting Qualified Object Syntax, 
71 - Explained: Bytes Provided, Bytes Available, and Bytes Returned, 
72 - Converting To or From ASCII and Other Character Sets, 
73 - Register an Exit Routine for a Program or Service Program, 
74 - Specifying IFS File Names Correctly, 
75 - Checking if IFS Files Exist, 
76 - RC4 Encryption Using Encryption APIs, 
77 - Writing Text to the Joblog, 
78 - Reading Save Files with RPG IV, 
79 - Encrypting Save Files in RPG IV, 
80 - Global and Local Variables, 
81 - Create Source Members Used to Create Service Programs, 
82 - Binder Source for a Service Program, 
83 - Creating Binder Language the Easy Way, 
84 - Linking to a Service Program from an RPG IV Program, 
85 - Swap Bytes — Big Endian to Little Endian in RPG IV, 
86 - Dumping the Call Stack with QpØzDumpStack, 
87 - Using Subprocedure Return Values, 
88 - How Does the %EDITC (Edit Code) Built-in Function Work?, 
89 - Solid Parameter Testing, 
90 - Create ASCII Text Files on the IFS, 
91 - High-level Math in RPG IV, 
92 - Program Described Print File with Dynamic Spacing, 
93 - Aligning or Centering Text in a Character Field, 
94 - Debug a Batch Job, 
95 - Find and Replace with Regular Expressions, 
96 - Use DLTOVR when Using OVRDBF OVRSCOPE(*JOB), 
97 - Use a FOR Loop to Allow Multiple Exit Points, 
98 - Source-level Debugger for Legacy RPG III, 
99 - Set and Get Environment Variables from within RPG IV, 
100 - Simple Scan with Ignore Upper/Lowercase, 
101 - Set the CLASSPATH for Java within RPG IV, 
Epilogue, 
Appendix - Source Member RPGTnT in QCPYSRC,