XCTest APIs make it easy to build unit tests that exercise app functionality and are capable of running on Mac, iPad, iPhone, or Simulator.A brief overview is presented during code completion, with more links and references available within the Utility area. Shortened API documentation is displayed while you’re programming, including comments that you write for your code.When you make a coding mistake, Xcode will immediately alert you, and a single keyboard shortcut will instantly fix the issue, so you won’t miss a beat while coding. Xcode goes beyond just reporting errors.Just like a word processor highlights spelling errors, Live Issues highlights common coding mistakes, without the need to click ‘build’ first.Easily search and find anything within Help or the Documentation and API Reference viewer.Xcode displays the shader information, and can visually construct how the frame was assembled within the Xcode debugger. Press a single button to capture a complete representation of the current OpenGL frame from an iOS device.Open Quickly is an essential tool in any keyboard-driven workflow. Simply press Cmd-Shift-O to instantly open any file within your workspace using the primary editor, or hold the Option key when selecting a file to open it in the Assistant editor.When building, Xcode compiles the asset catalog into the most efficient bundle for final distribution. The asset catalog editor in Xcode manages your app’s images, grouping together various resolutions of the same asset.The Xcode IDE configures these bots, analyzes nightly build and test results, and can track down which check-in broke the build. Xcode Server controls server-side bots that continuously build, analyze, test, and even archive your Xcode projects.Hover over any variable to drill into its contents, use Quick Look to see the data it contains, or right-click to add the variable to the watch list. Debug your app directly within the Xcode editor.With it, your code compiles quickly, and is optimized by Apple to produce blazing-fast apps specifically tuned for the CPUs in iPhone, iPad, and Mac.
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