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Lessons (4)

• L — Liskov Substitution Principle

  … So inheritance seems natural: js class Rectangle { setWidth(w) { this.width = w; } setHeight(h) { this.height = h; } area …

• JavaScript Essentials: Event Loop, Closures & this

  … arrow inherits this }, }; user.greet(); // "Hi, Ana" const greet = user.greet; greet(); // ❌ this is lost: plain call const …

• Hash Maps & Sets

  … Plain objects have inherited keys like "constructor" that can surprise you. Pattern 1: "Have I seen it before …

• Behavioral Patterns II: Chain, Template, Iterator, Mediator, Memento, Visitor

  … composition over inheritance. --- 3. Iterator 📺 Analogy: A TV remote's "next channel" button. You don't need to …