# returns show (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover returns show. Page: Feed: --- ## [Swift protocols and the main actor](https://www.swiftbysundell.com/articles/swift-protocols-and-the-main-actor) _2026-07-31 · Swift by Sundell_ How the main actor relates to Swift protocols, and what the practical differences are between isolating an entire protocol to the main actor, versus only marking specific requirements as isolated. ## [Building a design system at Genius Scan](https://www.swiftbysundell.com/articles/building-a-design-system-at-genius-scan) _2025-08-31 · Swift by Sundell_ An example of how to approach the task of building a design system for an app, by focusing on creating an initial set of reusable components that can be tweaked using the SwiftUI environment. ## [Deciding between ‘let’ and ‘var’ for Swift struct properties](https://www.swiftbysundell.com/articles/let-vs-var-for-swift-struct-properties) _2025-07-23 · Swift by Sundell_ Does marking a given Swift struct property as either ‘let’ or ‘var’ simply determine its mutability, or is there more to it? Let’s explore! ## [Decoding Swift types that require additional data](https://www.swiftbysundell.com/articles/decoding-swift-types-that-require-additional-data) _2025-06-30 · Swift by Sundell_ How Swift’s CodableWithConfiguration API can be used to inject additional, required data into a type’s decoding process, without having to use optionals or declare any additional decoding-specific types. ## [Tips and tricks for when using SwiftUI’s ViewBuilder](https://www.swiftbysundell.com/articles/swiftui-viewbuilder-tips-and-tricks) _2025-05-30 · Swift by Sundell_ Let’s explore how we can use SwiftUI’s ViewBuilder within our own code, and a few things that can be good to keep in mind when doing so. ## [Using Swift’s defer keyword within async and throwing contexts](https://www.swiftbysundell.com/articles/using-defer-within-async-and-throwing-contexts) _2025-04-15 · Swift by Sundell_ How Swift’s defer keyword can be incredibly useful when working with code scopes that have multiple exit points, such as throwing or async functions. ## [Modern URL construction in Swift](https://www.swiftbysundell.com/articles/modern-url-construction-in-swift) _2025-03-31 · Swift by Sundell_ How to combine Foundation’s latest URL APIs with Swift features like macros, to be able to work with both static and dynamic URLs in simpler and more predictable ways. ## [Swift by Sundell is back!](https://www.swiftbysundell.com/special/swift-by-sundell-is-back) _2025-03-31 · Swift by Sundell_ After a two-year hiatus, Swift by Sundell is finally back, with new articles published on a regular basis.