Why can't LLDB print view.bounds?

Question

Things like this drive me crazy when debugging:

(lldb) p self.bounds
error: unsupported expression with unknown type
error: unsupported expression with unkno         


        

Answer 1

I tried @an0's answer expr @import UIKit， but it didn't work.

Then I added a pch file, and add these lines of code in the file:

#ifndef PrefixHeader_pch
#define PrefixHeader_pch

#ifdef __OBJC__
#import 
#endif

#endif /* PrefixHeader_pch */    

Next, link the pch file to my project:

Run the app again, then I can use the dot notation in lldb console:

(lldb) po self.view.bounds    

For how to add a pch file , see the answer here PCH File in Xcode 6