How to reset warnings in Xcode 4

Question

Is there a way to reset all warnings / errors in an Xcode 4 project? Xcode 4 shows me errors and warnings, for example. Unused variable 'pageType'which was deleted a few weeks ago or 'XXXXViewController' undeclared (first use in this function)which was for testing purposes only and also disappeared.

I can not find any options how to get rid of these messages! Andy tips? Thank!

Answer 1

Probably the time to delete data from the project. Open the organizer, then the Projects tab. Select your project, then click the delete button next to the derived data transfer path (on the right). Confirm and re-index your project.