BiteSizedChunks.comLearn one small thing at a time.

Courses Suggested Paths Pricing

Course contentsShowHide

1What Swift is
2A brief history: from Objective-C to Swift
3Installing Xcode
4Playgrounds: experimenting with code
5Your first Swift program
6Swift outside Apple: server and Linux
7Variables with var and let
8Type inference and type annotations
9Strings and interpolation
10Numbers: Int, Double, Float
11Booleans and tuples
12Optionals: the heart of Swift
13Unwrapping: if let and guard let
14Nil-coalescing and optional chaining
15Force unwrapping: why to avoid it
16if, else, and switch
17Switch with pattern matching
18for-in loops and ranges
19while and repeat-while
20guard for early exits

1What Swift is
2A brief history: from Objective-C to Swift
3Installing Xcode
4Playgrounds: experimenting with code
5Your first Swift program
6Swift outside Apple: server and Linux
7Variables with var and let
8Type inference and type annotations
9Strings and interpolation
10Numbers: Int, Double, Float
11Booleans and tuples
12Optionals: the heart of Swift
13Unwrapping: if let and guard let
14Nil-coalescing and optional chaining
15Force unwrapping: why to avoid it
16if, else, and switch
17Switch with pattern matching
18for-in loops and ranges
19while and repeat-while
20guard for early exits

Search the Swift glossary

Lesson 19 of 2,511·1. Getting StartedFree lesson

while and repeat-while

Writing your lesson…

← Previous Next lesson →

© 2026 BiteSizedChunks.com. Learn one small thing at a time.

Glossary Contact Terms of Service Privacy Policy