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Page x Gray Box Versus Black Box Controls: The MicroHelp Problem 157 Red Flags to Look for with Black Box Components 159 Designing Class Models with Third-Party Controls 159 The Industry Relies on the Use of Third-Party Controls 161 Summary 162 Q&A 162 Workshop 163 Quiz 163 Exercise 164 Week 1 in Review 165 Week 2 at a Glance 169 Day 8 Versioning and Debugging 171 Understanding the Theory Behind the Self-Testing Object 172 Using Argument Data Type Checking 174 Using Return Data Type Checking 175 Designing Business Logic Constraint Checking into VB Classes 177 The Samsona Bank Teller System Example 177 Inserting Debug Identifiers for VB Classes 185 Using Visual Modeler to Add Debugging Footprints 187 Understanding the Need for Logging Class Test Results 188 Recording Test Logs 188 Saving and Displaying Test Logs 189 Using Source Code Control with Emphasis on SourceSafe 189 Using Visual SourceSafe 190 Local Directory Structuring 194 Summary 195 Q&A 195 Workshop 196 Quiz 196 Exercises 196
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