When you need to see how the API you are using was written, Xcode shows it to you in the language you expect. The Xcode documentation viewer shows Quick Help or reference documentation in the language of your choice-Objective-C, Swift, or both. REPL is available from within the Xcode console or by using LLDB from within Terminal when attached to a running process. Use Swift syntax to evaluate and interact with your running app, or write new code to see how it works in a script-like environment. The debugging console in Xcode includes an interactive version of the Swift language called the read-eval-print loop (REPL) built right in. The combination of richly formatted documentation and an interactive playground makes it easy to fully explore the API, changing and experimenting with the sample code. Open select documentation in a playground to learn from the tutorial in an interactive environment. Some uses for playgrounds include:ĭesigning a new algorithm, watching its results every step of the wayĮxperimenting with new API or trying out new Swift syntaxĬreating new tests and then verifying that they work before promoting them into your test suite When you’ve perfected your code in the playground, simply move that code into your project. Display variables in a graph, inspect each step of drawing a view, or watch an animated SpriteKit scene. If your code runs over time-for instance through a loop-you can add that line of code to Timeline Assistant to watch it progress. Enter a line of code, and the result appears immediately. Playgrounds make writing Swift code productive and easy. It provides full object-oriented features, and includes low-level language primitives such as types, flow control, and operators.įor full information about the Swift language and to get started using it, see The Swift Programming Language. Swift is a complete replacement for both the C and Objective-C languages. Use Swift interactively to experiment with your ideas and see instant results. Inspired by and improving upon Objective-C, Swift code feels natural to read and write. ![]() Swift includes optionals, generics, closures, tuples, and other modern language features. Write, debug, and maintain less code, with an easy to write and read syntax, and no headers to maintain. Other language safety related features include mandatory variables initialization, automatic bounds checking to prevent overflows, conditionals that break by default, and elimination of pointers to direct memory by default. Swift pairs increased type safety with type inference, restricts direct access to pointers, and automatically manages memory using ARC, making it easy for you to use Swift and create secure, stable software. Eliminate huge categories of bugs, crashes, and security holes. Access all of the Cocoa Touch frameworks with Swift. Swift compiles and is optimized with the advanced code analysis in LLVM to create high-performance apps.Ĭomplete platform. Swift is modern, powerful, expressive, and easy to use.įast. Swift is a advanced object-oriented programming language for iOS development. Xcode 6 includes the following highlighted features. It includes SDKs for OS X version 10.9 and 10.10, and iOS 8. Xcode 6 requires a Mac running OS X version 10.9.4 or later or 10.10. And the preview assistant now shows your app in different languages with only a mouse click. Live rendering within Interface Builder displays your handwritten UI code as you design, so that you can edit your view’s code and the IB rendering changes instantly. ![]() For example, view debugging pauses a running app and then explodes all the UI layers into a 3D visualization, making it easy to understand how the interface is drawn. Xcode 6 extends the Xcode feature set with new live visualization capabilities. Perfect new code within the playground, then easily promote that code into your main project. Developers can directly manipulate and experiment with Swift code live-enter the code for a Bézier path in the playground and watch the path drawn directly beside the code. ![]() Xcode 6 includes Swift, an innovative programming language with an interactive work area called a playground. Xcode 6.4 includes support for development on iOS 8.4. Xcode 6.3.2 fixes a Swift compilation speed regression. Xcode 6.3.1 is a maintenance update with bug fixes and performance improvements. Xcode 6.3 adds support for iOS 8.3, Swift 1.2, and many other new features. Xcode 6.2 Xcode 6.2 adds support for iOS 8.2 and WatchKit. Xcode 6.1.1 is a maintenance update with bug fixes and performance improvements. Xcode 6.1 adds the SDK for OS X version 10.10 and Swift language development for OS X. Xcode 6.0.1 is a maintenance update responding to developer input and Apple SQA testing. Xcode 6.0 includes SDKs for OS X version 10.9, iOS 8, and other enhancements.
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