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4 cards from this section. Quick, good the night before a test.
What is a design pattern?
Think about recurrent issues in programming.
Name one creational design pattern.
Focus on object creation.
What is the primary purpose of design patterns?
Think about patterns as solutions.
The Builder pattern is used for:
Consider how you build things step-by-step.
Implement a simple program using both Singleton and Observer patterns. Describe their interaction.
How would observers receive updates from the Singleton?
Design a lightweight document editor using the Command pattern to handle user actions like cut, copy, and paste. Explain the flow.
Think about how you store commands and execute them later.
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