bahaddinyasar · August 28, 2012 08:38
diff --git a/ios_debugger_tips_and_tricks.txt b/ios_debugger_tips_and_tricks.txt
 The po command stands for "print object."
 The symbol $eax refers to one of the CPU registers. In the case of an exception, this register will contain a pointer to the NSException object. 
 Note: $eax only works for the simulator, if you’re debugging on the device you’ll need to use register $r0. 

 (lldb) po [$eax class]
 You will see something like this:
 (id) $2 = 0x01446e84 NSException

 You can call any method from NSException on this object. For example:

 (lldb) po [$eax name]
 This will give you the name of the exception, in this case NSInvalidArgumentException

 (lldb) po [$eax reason]
 This will give you the error message: (unsigned int) $4 = 114784400 Receiver (<MainViewController: 0x6b60620>) has no segue with identifier 'ModalSegue'

 Reference: http://www.raywenderlich.com/10209/my-app-crashed-now-what-part-1
	The po command stands for "print object."
	The symbol $eax refers to one of the CPU registers. In the case of an exception, this register will contain a pointer to the NSException object.
	Note: $eax only works for the simulator, if you’re debugging on the device you’ll need to use register $r0.

	(lldb) po [$eax class]
	You will see something like this:
	(id) $2 = 0x01446e84 NSException

	You can call any method from NSException on this object. For example:

	(lldb) po [$eax name]
	This will give you the name of the exception, in this case NSInvalidArgumentException

	(lldb) po [$eax reason]
	This will give you the error message: (unsigned int) $4 = 114784400 Receiver (<MainViewController: 0x6b60620>) has no segue with identifier 'ModalSegue'

	Reference: http://www.raywenderlich.com/10209/my-app-crashed-now-what-part-1