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What Is New for Xcode 16 & What is Swift 6?

Updated on Tuesday, July 2, 2024

iBoysoft author Sherry Song

Written by

Sherry Song
Professional tech editor

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Jessica Shee

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Summary:  Have you watched the WWDC 2024? You must wonder some new changes or innovations of Apple and this article from iBoysoft briefly introduces the new features of Xcode 16.

What Is Xcode 16?


If you are familiar with the development environment or you have used Xcode on Mac, the changes or functions in Xcode 16 seem meaningful and helpful for you.

As we know, Xcode 16 is Apple's latest iteration for macOS, designed to streamline and enhance the development process for all Apple platforms, including iOS, macOS, watchOS, and tvOS.

This release discussed in WWDC 2024 introduces a host of new features and improvements aimed at making codes, building, debugging, and more powerful tools for developers.

What versions are supported for Xcode 16?

Apple Xcode 16 supports the latest versions of Apple's operating system macOS Sequoia, ensuring compatibility with the newest features and frameworks of iOS 18, iPadOS 18, macOS 15, tvOS 18, and watchOS 11...

 Tips: If you prepare to download Xcode 16 beta, your Apple devices should be in the latest updates. 

What is New in Xcode 16

Whether you are crafting a SwiftUI app or a complex cross-platform project, Xcode 16 brings tools and technologies that elevate your development workflow. Here we explore what's new in Xcode 16.

#1 Editing

Xcode 16 enhances the code editing experience with significant updates in code completion, Swift 6, and the integration of Apple SDKs.

  • Code completion: Xcode 16 enhances the accuracy and relevance of its code completion by offering more suggestions. It can analyze the surrounding context smartly to provide predictions that align closely with the current coding task.
    Edit new features in Xcode 16
  • Swift 6: With Swift 6, a new language mode introduces robust concurrency safety measures, transforming potential data races into runtime issues. This advancement helps developers to identify and address concurrency problems more effectively by giving the warning.
  • Apple SDKs: It ensures that apps can take full advantage of the latest hardware and software capabilities provided by Apple.
  • Preview changes: There are two new APIs Previewable Macro and PreviewModifier. Previewable Macro simplifies the process of creating and managing previews in SwiftUI while PreviewModifier allows developers to specify custom configurations for their previews

#2 Building

Xcode 16 improves the build system with the introduction of Explicit Built Modules, which is good for faster parallelism and better diagnosis. However, Xcode 16 offers you the default module, the Explicit Built Modules needs setting.

This new build system feature focuses on streamlining the build process through a three-step approach: Scan dependencies, Compile Clang module, and commands

You can share these Xcode 16 new features with others.


#3 Debugging

Xcode 16 introduces advanced debugging tools that help developers identify and resolve issues more effectively.

  • DWARF5: The move to DWARF5, the latest version of the Debugging With Attributed Record Format, makes the debugging process quicker and more informative.
  • Thread Performance Checker: It provides real-time analysis of thread activity, helping developers identify performance bottlenecks and threading issues.
  • Unified Backtrace View: This feature allows developers to navigate through call stacks more intuitively.

You can see the main process here as follows:

Dedug new features in Xcode 16

#4 Testing

Xcode 16 enhances the testing environment with improved Swift testing capabilities, making it easier to write, manage, and execute tests.

  • Swift Testing: Swift Testing streamlines the process of writing tests by expressive APIs. This framework integrates seamlessly with existing XCTest.

Absolutely, there are other various new and amazing features of Xcode 16, you can have a look here. Download Xcode 16 on Mac and have a try.

Xcode 16 new features

Final words

Xcode 16 represents a significant step forward in Apple's development environment, enhancing every stage of the app development. Whether you're working on a small utility app or a large-scale enterprise application, Xcode 16 will give you help.

If you are interested, you can learn more information on the Apple Developer website. Share this post to let more people know Xcode 16~