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

LLDB does not support dot notation for message sending when using p and that's why

p self.bounds

doesn't work, but

p [self bounds]

does.

(It actually supports it for objects when you use po, though)

Also, LLDB doesn't have type information of non-objects available at runtime, so you need to explicitly provide a type by casting the return value.

Answer 2

Try with following expression,

p self.view.bounds.size.width

or use,

po self.view

p - Print is only uses to print normal/simple values while, po - Print Object works same as NSLog to print value of an object