Swift

What you'll learn

• Explain Swift's goals, tools and basic syntax, and build packages with SwiftPM.
• Handle optionals, control flow and collections safely and idiomatically.
• Model data with structs, enums with associated values and classes, choosing value or reference semantics.
• Write functions, closures and error handling, and design with protocols, extensions and generics.
• Manage memory with ARC, use access control and recognise property wrappers, result builders and macros.
• Write concurrent code with async/await, actors and Sendable, and test it with Swift Testing.

Syllabus

Getting Started with Swift

1. What Swift Is and Where It Runs
2. Xcode, Playgrounds and the Swift Package Manager
3. Constants, Variables, Types and Strings

Optionals, Control Flow and Collections

1. Optionals
2. Control Flow and Pattern Matching
3. Arrays, Dictionaries, Sets and Functional Operations

Structs, Enums and Classes

1. Structs and Value Semantics
2. Enums with Associated Values
3. Classes, Inheritance and Initialisation

Functions, Closures and Errors

1. Functions and Argument Labels
2. Closures and Capture Lists
3. Error Handling

Protocols, Extensions and Generics

1. Protocols and Extensions
2. Generics, Associated Types, some and any
3. Codable, Equatable, Hashable and Comparable

Memory, Access Control and Language Features

1. Automatic Reference Counting
2. Access Control and Modules
3. Property Wrappers, Result Builders and Macros

Concurrency

1. async/await and Structured Concurrency
2. Actors, MainActor, Sendable and Swift 6 Data-Race Safety
3. Cancellation and AsyncSequence

Apps, Testing, Ecosystem and Revision

1. A First Look at SwiftUI
2. Testing with Swift Testing and XCTest
3. Beyond Apple Apps: Server Swift, Interop and Cross-Platform
4. Revision and Interview Questions