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Lessons (3)

• What Are Design Patterns?

  … create objects? Factory Method, Abstract Factory, Builder, Prototype, Singleton 🧱 Structural How do I connect objects into bigger …

• Creational Patterns: How to Make Objects

  Factory Method, Abstract Factory, Builder, Prototype and Singleton, each with a real-life analogy, a picture and a …

• Which Pattern Do I Need?

  … for a one-off task Plain function first Singleton abuse Global state everywhere, flaky tests Dependency injection God …