Master Swift Fundamentals: Variables, Constants, Strings, Data Types #100daysofiOS Day 4

🎉 Welcome to Day 4 of #100DaysOfiOS! In today’s lesson, we dive into the most important fundamentals of Swift — the building blocks of every iOS app you will ever create. This video covers everything you need to start writing real Swift code with confidence: 📘 What you’ll learn today: ✔ Variables (var) ✔ Constants (let) ✔ Swift data types (String, Int, Double, Bool) ✔ String interpolation ("Hello \(name)") ✔ Type conversion (Int → Double, String → Int, etc.) ✔ Practical coding examples & beginner mistakes to avoid By the end of this lesson, you’ll understand how Swift stores and handles data — and you’ll be ready for deeper topics like control flow, loops, and SwiftUI bindings. 👨‍💻 Code Along With Me We write multiple examples together so you can build intuition and confidence with the Swift language. 🚀 Next Video: Operators in Swift — arithmetic, comparison, logical & more. 🙌 Join the Challenge Follow along with #100DaysOfiOS Subscribe + hit the bell 🔔 so you don’t miss upcoming lessons! #Swift #SwiftUI #LearnSwift #SwiftProgramming #iOSDevelopment #100DaysOfiOS