Skill Topic · Cinematic

📘 Kotlin — Null Safety

Null Safety = Kotlin ki superpower! NullPointerException ko goodbye! 🛡️

Topic 1

📌 1. Null Problem

📚 ` ╔══════════════════════════════════════════════════════════╗ ║ THE BILLION DOLLAR…

Topic 2

💡 `kotlin fun main() { // ═══ Non-null (default) ═══ var name: String = "Raj" // name =…

Topic 3

🎯 `kotlin fun main() { val name: String? = "Kotlin" val nullName: String? = null // ═══…

Topic 4

⭐ `kotlin fun main() { val name: String? = null // ═══ Elvis — null to default value do ═══…

Topic 5

🔑 `kotlin fun main() { // ═══ !! = Main guarantee deta hoon ye null nahi hai ═══ var name:…

Topic 6

✨ `kotlin fun main() { val name: String? = "Raj" val nullName: String? = null // ═══ let —…

Topic 7

🌟 `kotlin class UserProfile { // ═══ lateinit — baad me initialize karenge ═══ lateinit var…

Topic 8

🚀 `kotlin // ═══ Safe function with nullable param ═══ fun getLength(str: String?): Int {…

Topic 9

📚 KEY POINTS: - Nullable type: String? — ? lagao to null allowed - Safe call (?.):…

Quick Quiz

📘 Kotlin — Null Safety ka sabse sahi definition kya hai?

Complete! 🎉

Aliens School · HIEN · Cinematic Knowledge

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