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Programming Fundamentals
Programming Concepts A
Programming Concepts B
Programming Concepts C
Object-Oriented Programming A (Last Updated: 9/4/2025)
Object-Oriented Programming B (Last Updated: 10/3/2025)
Object-Oriented Programming C (Last Updated: 11/12/2025)
Advanced .NET Programming A
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6.2.5 Why we Use the Observer Pattern
Observer Design Pattern (SourceMaking)