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Xcode 16 includes Swift 6 and SDKs for iOS18, iPadOS 18, tvOS 18, watchOS11, versionOS 2, and macOS Sequoia.

• Predictive code completion boots your productivity when writing Swift code, using a code intelligence model that keeps your code private and works even when you're offline.
• Swift 6 makes it even easier to write safe concurrent code with a new language mode that analyzes your code at compile-time and diagnoses possible data rates.
• Swift Testing simplifies writing tests with features like parameterization to run the same test over a series of values, and tags to flexibly organize your tests.
• Previews can share environments or data across your app and use property wrappers within preview blocks.
• Explicit Modules provides better build parallelism, better diagnostics, and faster debugging
• Unified backtrace with shows relevant code from all stack frames in a single view.
• Thread Performance Checker surfaces runtime issues and performance problems, including diagnostics to identify excessive disk writes.
• RealityKit Debugger captures snapshots of a running visionOS app entity hierarchy to explore it in 3D. 

Xcode 16 Highlights

Transform your ideas into code with predictive code completion and faster prevides. Supercharge your builds with explicit modules.

Get deeper insight into your app's performance with improved diagnostics. And easly write tests with the new Swift Testing framework.

Xcode Highlights