Skill Topic · Cinematic

📘 Kotlin — Type System Deep Dive

Any, Nothing, Unit, smart casts — Kotlin ka type system powerful aur safe! 🧬

Topic 1

📌 1. Type Hierarchy

🧠 ` ╔═══════════╗ ║ Any ║ ← Root of ALL non-null types ╠═══════════╣ ┌────┤ ├────┐ │…

Topic 2

🔗 `kotlin // ═══ Any = har type ka parent (Java's Object jaisa) ═══ fun…

Topic 3

⚡ `kotlin // ═══ Unit = "kuch return nahi" (Java's void, but it's an actual type!) ═══ fun…

Topic 4

📊 `kotlin // ═══ Nothing = function KABHI return nahi karti ═══ // (hamesha throw karti hai…

Topic 5

💡 `kotlin // ═══ Kotlin compiler automatically cast karta hai after type check! ═══ fun…

Topic 6

🎯 `kotlin fun main() { val obj: Any = "Hello Kotlin" // ═══ Unsafe cast — as ═══ val str:…

Topic 7

🔮 `kotlin // ═══ typealias = complex types ko short name do ═══ typealias UserMap =…

Topic 8

🌐 ` ╔═══════════════════╦══════════════════════════════════════╗ ║ Operator ║ Purpose ║…

Topic 9

🧠 `kotlin // ═══ Pattern 1: Type-safe heterogeneous list ═══ sealed class JsonValue { data…

Topic 10

🔗 KEY POINTS: - Any: root of all non-null types (toString, hashCode, equals) - Any?: root…

Quick Quiz

📘 Kotlin — Type System Deep Dive ka sabse sahi definition kya hai?

Complete! 🎉

Aliens School · HIEN · Cinematic Knowledge

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