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Design Patterns
Creational, structural and behavioral patterns with runnable examples, and how to know when to skip them
Each ride has 5 stops: read the trick, answer the question, ride on. Pass with 3 of 5 correct (1 star), 4 for 2 stars, all 5 for 3 stars. Progress is saved in this browser. Prefer to read first? Open the reading version of Design Patterns.