No such module 'Cocoa' in Swift Playground

Question

I\'m trying to follow some of the code used in the WWDC playgrounds session, I\'m trying to import the Cocoa framework with:

import Cocoa

B

Answer 1

If you are getting this or a similar type of error despite having the playground set properly, try the following:

Close XCode and from the terminal run:

 rm -rf "$(getconf DARWIN_USER_CACHE_DIR)/org.llvm.clang/ModuleCache"

Then reopen XCode and most times this fixes many Playground issues. I run this command quite frequently during an intensive Playground work session (sometimes as many as a few times per hour) and have found liberal use of removing the ModuleCache to solve a multitude of strange playground behaviors.

If you're still having issues with playgrounds you can try:

rm -rf ~/Library/Developer/Xcode/DerivedData

and/or

rm -rf ~/Library/Caches/com.apple.dt.Xcode