This is all done using controls within Xcode that only apply to your app. You can switch your app in and out of Dark Mode while debugging.Interface Builder lets you quickly switch your design and preview from light to dark. Xcode 10 also gives you powerful tools for creating your own dark apps for macOS.You can switch it on from System Preferences. macOS Mojave has a new dark interface which brings dark mode to the Xcode 10.Xcode 10 can coexist with previous versions of Xcode.Xcode 10 supports running multiple concurrent versions of the Xcode app and of any associated tools such as Simulator.Xcode 10 includes SDKs for iOS 12, watchOS 5, macOS 10.14, and tvOS 12.

Xcode 10 requires a Mac running macOS 10.13.6 or later.The Xcode development environment bundles the Instruments analysis tool, Simulator, and the OS frameworks in the form of tvOS SDKs, watchOS SDKs, iOS SDKs, and macOS SDK. Xcode is the complete developer toolset used to create apps for Apple TV, Apple Watch, iPad, iPhone, and Mac.

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