Xcode 9: Undefined Behavior Sanitizer

October 5th, 2017

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Xcode 9 adds the Undefined Behavior Sanitizer. Undefined Behavior Sanitizer detects undefined behavior in your code, specializing in checking unsafe constructs in C, C++, and Objective-C code. Undefined Behavior Sanitizer is turned off initially. You must enable it in your scheme. Select the Run step in the scheme and click the Diagnostics button at the […]


Xcode 9: Main Thread Checker

October 2nd, 2017

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Xcode 9 adds Main Thread Checker, a tool that detects when you make AppKit, UIKit, and WebKit calls on a background thread. Main Thread Checker should be enabled automatically when debugging, but you can check your scheme by selecting the Run step and clicking the Diagnostics button at the top of the scheme editor. Make […]


Xcode 9: Ignore Files

September 25th, 2017

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Xcode 9’s Source Control preferences let you specify files to ignore so the version control system won’t track them.


Xcode 9: New Build System

September 21st, 2017

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Xcode 9 provides a preview of a new build system that has been built from scratch in Swift. The new build system is supposed to be faster and more reliable. To use the new build system in one of your projects, you must enable the new build system for that project. Choose File > Project […]


Xcode 9: Cocoa Xib File Projects Return

September 19th, 2017

Filed under: Cocoa, Mac Development, Xcode | Be the first to comment!

Xcode 8.3 removed the Use Storyboards checkbox for new Cocoa application projects. The checkbox has returned in Xcode 9 so you can choose whether to use storyboards or xib files for your project’s user interface.