Explains the difference between implicitly unwrapped and force unwrapped optionals in Swift, highlighting their dangers and appropriate use cases.
A Swift developer explains how wrapping primitive types like Int in structs improves type safety and eliminates runtime bugs in a toy train control app.
A guide to disabling NSLog in iOS/macOS apps to reduce console noise from third-party libraries, with code examples in Swift and Objective-C.
Explains the dangers of force unwrapping Swift optionals (!) and why it should be avoided, promoting safer alternatives like optional binding.
Explains how to use the Swift Either enum for type-safe handling of two possible value types, with a practical example for table view data sources.
A guide to implementing a protocol-oriented, testable logging system in Swift without leaking dependencies or using singletons.
A tutorial on implementing a custom, generic version of Swift's 'if let' optional unwrapping construct to understand how optionals work.
A guide to organizing Xcode projects with conventions for naming, folder structure, and managing multiple targets and platforms.
Explains Swift's Optional type, its implementation as an enum, and the importance of understanding it beyond basic nil-checking.
Explains how to use Swift's @available attribute to mark methods as unavailable, with examples for subclassing and legacy code.
Mike Ash announces a hiatus from regular blog posts to focus on completing his book, 'The Complete Friday Q&A: Volume II'.
Explores bridging Swift's modern features with a large legacy Objective-C/C++ codebase, discussing practical integration strategies.
A cheatsheet and Swift code sample for navigating Apple's ClockKit complication families and templates for watchOS 5 development.
A developer explains a subtle bug in date comparison code when ignoring time components, using Swift/NSDate examples.
Explains when to use strong vs. weak and optional vs. implicitly unwrapped IBOutlets in Swift/iOS development, with practical rules.
Explains how to use Swift's stride(to:by:) method to safely replace deprecated C-style for loops, especially for edge cases where ranges fail.
Explains how to use Swift protocols to abstract third-party dependencies like NSHTTPCookieStorage, improving code testability and isolation.
A guide to using OHHTTPStubs, a Swift library for stubbing network requests in unit tests to make them faster and more reliable.
A guide to testing asynchronous Swift code using the Quick and Nimble frameworks, covering callbacks and delegate methods.
A guide on how to write unit tests for Swift code that uses the delegate pattern for asynchronous operations, using XCTest and the Spy test pattern.
