Blog

Guide users through resolving issues and make your Swift applications more intuitive and supportive by defining user-friendly descriptions and recovery suggestions for custom errors.

Explore the practical applications and distinctions of self, Self, and Self.self in Swift, clarifying their roles in instance referencing, protocol conformance, and metatype access.

Discover how string comparison methods from Foundation outperform basic case conversion, ensuring precise, efficient, and culturally aware comparisons in our applications.

Define custom logic for matching different types of data in switch cases by overloading the Swift pattern matching operator (~=).

Property observers like willSet and didSet aren't triggered during initialization in Swift, but if we need to execute logic from property observers at this stage, we can use some workarounds.

Learn how to wrap withObservationTracking() into an AsyncStream to iterate over changes with an async for loop.

Monitor changes to specific properties of an observable class using withObservationTracking() function from Observation framework in iOS 17.

In Xcode 15 code completion we can view all the possible permutations of function parameters by pressing the right arrow key.

Swift 5.9 introduces the use of if/else statements as expressions, simplifying value returns, variable assignments, and enhancing code readability.

Xcode 15 automatically generates static properties on ColorResource and ImageResource types for colors and images that we store in asset catalog. This lets us access them in SwiftUI, UIKit or AppKit code without using string literals.

Discover the power of precise pattern matching with Swift enums as we look into using the where clause in switch statements and for-in loops, and adding extra conditions in while loops and if-case statements for more expressive code.

To sort an array based on a particular property in Swift, we can use the KeyPathComparator API from Foundation in combination with sorted(using:) method.

Make use of the new clock APIs in Swift 5.7 to delay an async task by a certain duration without calling the old method that accepts nanoseconds.

In Swift 5.7 that comes with Xcode 14 we can check if two values of type Any are equal, because we can cast values to any Equatable and use any Equatable as a parameter type.

Explore different ways to iterate over items and indices in a collection and learn why enumerated() is not a good fit for it.

Explore how to get around the Swift language limitation of not being able to define static mutable properties in generic types and protocol extensions.

Build a system for conforming polymorphic types to Codable protocol, that can be reused in multiple situations.

Customize encoding and decoding logic for individual fields of codable types in Swift by defining codable property wrappers.

Define your own operator that lets you use String as default value for any Optional type in debug prints.

Make Swift 5 enums that have multiple associated values of different types conform to Encodable and Decodable protocols for saving data to disk or interacting with Web APIs.