Dynamic code injection is good for development, but it will leave huge security hole if you put it in your application. Please, do not use this tool in your real applications, that you about to publish in App Store. Each time, you are using dyci, it saves your time.that rm -rf /Library/Developer/CommandLineTools Reinstall Xcode xcode-select. Dyci is not about loading new code in application. You probably dont need Xcode, so install the smaller Command Line Tools.There's video about Tic-Tac-Toe game creation without project restart If you curious about How how it works, you can read about it in wiki. Your changes are always saved (They will not be discarded on next run).You don't need to prepare/modify/lock your code for dyci.You aren't writing some kind of script, you are writing your code!.Remember, you can inject any code at runtime. It's good for quick small fixes on big projects.It's good for applying small logic changes.If not, then, you can add dyci in other ways Reasons, why do you need this tool If you are using CocoaPods, then, just add this line to your PodFile If you already know, what this tool is about, you can move to Installation page Adding to your projectĪfter installation, you need to add dyci library to your project dyciĪllows you to inject your code into running iOS application, whithout restarting it. If you've already expirienced this issue - remove and reinstall Xcode. You can go ahead and re-install Xcode from the App Store. For newer versions of Xcode, this step should be sufficient.

In other case, you'll need to reinstall it :( Go to the Applications folder and find the Xcode App, right-click on it and move it to Trash/Bin.

Reinstall xcode