My favorite new Swift API from iOS 15
In this post, Paul Hudson from Hacking With Swift shares his favorite new Swift API from iOS 15. This new API looks deceptively simple, but internally it's built on effectful read-only properties and AsyncSequence, both of which are powerful new language features.
Posted on September 3, 2021
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Open Sourcing: Custom Dump
Debugging relies upon the ability to dump (print, log, etc.) data structures into human-readable strings. Swift provides a built-in tool for this called dump. However, its usability is limited due to the format of the output. To address this, the Point Free team has released this open-source library which provides a set of tools to aid debugging.
Posted on September 3, 2021
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Open Sourcing Identified Collections
Most applications involve working with collections of data in some form, and it's common to model such data as a standard Array. However, as applications grow more complex, the limitations of Arrays might start to cause problems. Thankfully, this open-source library, created by the Point Free team, can help. It provides a new type called IdentifiedArray for working with collections of identifiable elements in a performant way.
Posted on August 29, 2021
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Using ‘@unknown default’ within switch statements
In Swift 4.2, enums defined in the standard library are either frozen or non-frozen. A frozen enum is one that will never get a new case. In this post, John Sundell shows us how to handle non-frozen enums in Switch statements.
Posted on August 13, 2021
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StaticString, and how it works internally in Swift
Swift's StaticString is a type designed to represent text known at compile time. Instances of this type are immutable, and it provides only low-level access to its contents. In this post, Bruno Rocha examines StaticString, explaining how the Swift compiler differentiates it from regular Swift strings.
Posted on August 12, 2021
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SwiftUI - Router Pattern
The coordinator pattern is a pattern often used when developing iOS apps using UIKit. It enables developers to separate navigation logic from view logic, resulting in reusable and testable code. In this post, David Gary Wood demonstrates an equivalent pattern implemented with SwiftUI, which he calls the router pattern.
Posted on August 11, 2021
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Using tuples to Complex Sorting Operations in Swift
The Swift standard library contains several overloads of the < comparison operator used to compare tuples of various sizes. In this post, Leonardo Maia Pugliese demonstrates how to use these overloads to implement complex sorting operations.
Posted on August 10, 2021
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Backporting new features with @_alwaysEmitIntoClient
Swift attributes provide additional information about a declaration or type. In this post, Federico Zanetello explains how SwiftUI uses the @_alwaysEmitIntoClient attribute to make new features available on older OS versions.
Posted on August 6, 2021
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Throwing and asynchronous Swift properties
Computed properties that only define a get accessor are read-only. When they also have associated behavior, an effect, they are known as effectful read-only properties. In this post, John Sundell demonstrates how such properties can throw errors and perform asynchronous tasks.
Posted on July 30, 2021
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Copy-On-Assignment vs. Copy-On-Write in Swift
Copy-on-write is a resource-management technique used to efficiently copy data, such as a Swift struct. It involves delaying the copy operation of the data until it's needed, usually when some part of the data is modified. In this post, Ayman Fayez shows us how to implement copy-on-write for a Swift struct which has a reference type as a property.
Posted on July 29, 2021
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