Swift

2024

2023

2022

2021

Developing Embedded Applications with Swift

May 2024

In recent years, Swift has gradually shown its potential for cross-platform development. In this article, I will share some of my experiences and attempts at using the Swift language for embedded development on the SwiftIO development board. This article specifically discusses embedded development on MCU (Microcontroller Unit) hardware that does not have a Memory Management Unit (MMU), and does not cover devices like the Raspberry Pi that possess full general-purpose computing capabilities.

New Frameworks, New Mindset: Unveiling the Observation and SwiftData Frameworks

Apr 2024

This content was presented at Let's VisionOS 2024. For easier reading, I have simplified the original material and adjusted it for a more formal written expression. The core message of this share is to convey the following central idea: Although these new frameworks were designed to address issues in existing frameworks, we should not be constrained by past experiences and conventions. It is necessary to learn and use these new tools with an open mind and a fresh perspective. Adopting new frameworks should be seen as an excellent opportunity to refactor projects towards greater safety and modernization.

How to Dynamically Construct Complex Predicates for SwiftData

Mar 2024

NSCompoundPredicate allows developers to combine multiple NSPredicate objects into a single compound predicate. This mechanism is particularly suited for scenarios that require data filtering based on multiple criteria. However, in the new Foundation framework restructured with Swift, the direct functionality corresponding to NSCompoundPredicate is missing. This change poses a significant challenge for developers who wish to build applications using SwiftData. This article aims to explore how to dynamically construct complex predicates that meet the requirements of SwiftData, utilizing PredicateExpression, under the current technical conditions.

Swift Predicate: Usage, Composition, and Considerations

Feb 2024

NSPredicate has always been a powerful tool provided by Apple, allowing developers to filter and evaluate data collections in a natural and efficient way by defining complex logical conditions. Over time, with the continuous maturation and development of the Swift language, in 2023, the Swift community undertook the task of reconstructing the Foundation framework using pure Swift language. In this significant update, a new Predicate feature based on Swift coding was introduced, marking a new stage in data processing and evaluation. This article aims to explore the usage, structure, and key considerations of Swift Predicate in practical development.

A Deep Dive Into Observation: A New Way to Boost SwiftUI Performance

Jun 2023

This article will comprehensively and thoroughly explore the Observation framework in a Q&A format, including its reasons for creation, usage methods, workings, and precautions.

Unified Resource Management in Multi-package Projects

Nov 2022

With the continuous improvement of SPM (Swift Package Manager) functionality, more and more developers are starting to separate functionality and manage code in their projects by creating multiple packages. SPM itself provides the ability to manage various types of resources in packages (including localized resources), but it is mainly limited to using these resources within the package and it is difficult to share resources. In cases where multiple targets need to call the same resource, the original method is difficult to cope with. This article will introduce a method for uniformly managing resources in a project with multiple SPM packages.

Collaboration between Combine and async/await

Dec 2021

This article will cover the benefits of using Combine and async/await, whether they can work together, and how to make them work together effectively.

AttributedString: Making Text More Beautiful Than Ever

Oct 2021

At WWDC 2021, Apple introduced a long-awaited feature for developers - AttributedString. This means that Swift developers no longer need to use the Objective-C-based NSAttributedString to create styled text. This article will provide a comprehensive introduction to it and demonstrate how to create custom attributes.

Apple’s New Formatter API: Comparison of Old and New and How to Customize

Oct 2021

This article will introduce how to create a Formatter that complies with the new API, offering readers a different perspective to understand the design mechanism of the new Formatter API; it also compares the new and old versions of the API.

Rebuilding SwiftUI's Redux-like State Container with Async-Await

Sep 2021

This article explains how to refactor SwiftUI's state container code using the Async/Await feature in Swift 5.5

Setting Up a Swift Development and Debugging Environment on Linux

Feb 2021

Since Swift announced its open-source status and Linux support in 2015, more than 5 years have passed. Despite Swift's rapid development in the initial years, it wasn't widely accepted in the Linux community. This situation was due to several reasons, including issues with language stability and insufficient support for Linux, lacking attractive foundational and third-party libraries, and a shortage of high-profile projects.