Xcode 8 syntax highlighting doesn't work

Question

The code above has correct syntax highlighting in Xcode 7. It is mix of Obj-C + Swift:

I\'ve updated project to support

Answer 1

In my case:

In Finder I navigated to user->Library->Developer->Xcode->DerivedData. Close your Xcode Project then Clear DerivedData. It's work for me.

Happy Coding...:)