Learn Swift for Beginners 2026 - Lesson 12 - Arrays

Learn what arrays are and how to use them in Swift! 🧑‍💻

Resources:
📚 Full guide:
https://codewithchris.com/learn-swift?utm_source=youtube&utm_medium=video&utm_campaign=learn_swift_lesson_12

In this lesson, you'll get a clear introduction to Swift arrays — one of the most essential data structures in programming. We'll cover everything from creating arrays, accessing values by index, understanding zero-based indexing, and working with data types.
Timestamps:
0:00 Introduction & lesson overview
0:45 Creating variables — the problem with many values
1:11 Introducing arrays — multiple values in one variable
1:51 Accessing array values by index
2:21 Zero-based indexing explained
2:59 "Index out of range" error explained
3:30 Arrays are like lists — adding & removing items
3:49 Data types and type inference with arrays
4:10 Array data type syntax ([String], [Int])
4:34 Array of integers example
4:58 When you must specify the data type (empty arrays)
5:22 Why you'd create an empty array
5:40 Alternative syntax for empty arrays
5:52 Another way to declare an empty integer array
6:19 Variables vs. constants with arrays
7:33 Printing first, last, and count
8:32 Wrapping up

What you'll learn:

- What arrays are and why they're useful
- How to create an array in Swift
- Accessing elements using index numbers
- Zero-based indexing (and avoiding "index out of range" errors)
- Array data types ([String], [Int])
- Creating empty arrays and when to specify the type
- Variables vs. constants with arrays

📚 This is part of the Learn Swift series - a beginner-friendly course teaching you iOS app development from the ground up using Swift and Xcode.
https://www.youtube.com/playlist?list=PLMRqhzcHGw1bVghYq_TAiPeoKaBVlOJu5

👇 Drop your favorite movies in the comments!

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Видео Learn Swift for Beginners 2026 - Lesson 12 - Arrays канала CodeWithChris