Browse by Category

API design

• Configurable types in Swift
• Wrapping sequences in Swift
• Structuring model data in Swift
• Designing Swift APIs
• Extending optionals in Swift
• Specializing protocols in Swift
• Building DSLs in Swift
• Trimming long argument lists in Swift
• Type inference-powered serialization in Swift
• Static factory methods in Swift
• Writing self-documenting Swift code
• Delegation in Swift
• Observers in Swift - Part 1
• Observers in Swift - Part 2
• Code encapsulation in Swift
• Composing types in Swift
• Building an enum-based analytics system in Swift
• Avoiding singletons in Swift
• Using @autoclosure when designing Swift APIs
• Namespacing Swift code with nested types
• Simple Swift dependency injection with functions
• Type erasure using closures in Swift

Concurrency & asynchronous programming

• Task-based concurrency in Swift
• Functional networking in Swift
• Avoiding race conditions in Swift
• Using tokens to handle async Swift code
• Under the hood of Futures & Promises in Swift
• A deep dive into Grand Central Dispatch in Swift

Debugging & development

• Review: Swift Playgrounds 3.0 for iPad
• Swift playgrounds tips & tricks
• Getting started with signposts
• Launch arguments in Swift

Frameworks and devices

• Building iPad Pro features in Swift
• A first look at the Natural Language framework

Error handling

• Using errors as control flow in Swift
• Under the hood of Assertions in Swift
• Picking the right way of failing in Swift
• Providing a unified Swift error API

Language features

• Customizing Codable types in Swift
• The Swift 5.1 features that power SwiftUI’s API
• Property observers in Swift
• Pattern matching in Swift
• Inline types and functions in Swift
• Reflection in Swift
• The power of type aliases in Swift
• The power of key paths in Swift
• Enum iterations in Swift 4.2
• Synthesized conditional conformances in Swift 4.2
• Conditional conformances in Swift
• Using tuples as lightweight types in Swift
• The power of sets in Swift
• Custom operators in Swift
• First class functions in Swift
• Using generic type constraints in Swift 4
• The power of switch statements in Swift
• Using lazy properties in Swift

Maintenance, structure & code quality

• Rule-based logic in Swift
• Generalizing Swift code
• Shifting paradigms in Swift
• Extracting view controller actions in Swift
• Constructing URLs in Swift
• Early returning functions in Swift
• Structuring Swift code
• Writing backward compatible Swift code
• Replacing legacy code using Swift protocols
• Adding Continuous Integration to a Swift project
• Improving Swift compile times

Managing state & objects

• Utilizing value semantics in Swift
• Pure functions in Swift
• Bindable values in Swift
• Different flavors of type erasure in Swift
• The power of UserDefaults in Swift
• Managing objects using Locks & Keys in Swift
• Different flavors of view models in Swift
• Model controllers in Swift
• Handling mutable models in Swift
• The power of Result types in Swift
• Type-safe identifiers in Swift
• Logic controllers in Swift
• Using the builder pattern in Swift
• Feature flags in Swift
• Preventing views from being model aware in Swift
• Separation of concerns using protocols in Swift
• Different flavors of dependency injection in Swift
• Dependency injection using factories in Swift
• Capturing objects in Swift closures
• Creating custom collections in Swift
• Using the factory pattern to avoid shared state in Swift
• Identifying objects in Swift
• Modelling state in Swift
• Handling non-optional optionals in Swift

Open source & sharing

• Sharing Swift code
• Open sourcing Swift code

Standard Library & Swift Package Manager

• Transforming collections in Swift
• Building a command line tool using the Swift Package Manager
• Swift sequences: The art of being lazy

Strings

• String literals in Swift
• String parsing in Swift
• Exploring the new String API in Swift 4

Testing

• Defining testing data in Swift
• Integration tests in Swift
• Testing error code paths in Swift
• Mock-free unit tests in Swift
• Async/await in Swift unit tests
• Refactoring Swift code for testability
• Faster and more robust tests with Xcode 10
• Making Swift tests easier to debug
• Unit testing asynchronous Swift code
• Mocking in Swift
• UI testing analytics code in Swift
• Using unit tests to identify & avoid memory leaks in Swift
• Avoiding force unwrapping in Swift unit tests
• Reducing flakiness in Swift tests
• Writing end-to-end JSON mapping tests in Swift
• Writing unit tests in Swift playgrounds
• Getting started with Xcode UI testing in Swift
• Time traveling in Swift unit tests
• Testing Swift code that uses system singletons in 3 easy steps

View controllers & Navigation

• Lightweight presenters in Swift
• Subclass-free view controllers in Swift
• Custom container view controllers in Swift
• Navigation in Swift
• Using child view controllers as plugins in Swift

UI & Animations

• Slot-based UI development in Swift
• Reusable data sources in Swift
• A more Swifty Core Animation
• Core Animation gems: Using replicator layers in Swift
• Building a declarative animation framework in Swift - Part 1
• Building a declarative animation framework in Swift - Part 2
• Using SpriteKit to create animations in Swift

WWDC

• A Swift developer’s WWDC dreams