How to debug member variable (ie., Array, Dictionary) in LLDB?

Question

I've declared a Global Array/ Dictionary in Interface like below.

@interface ViewController ()
{

    NSDictionary *dictionary;

    NSArray *array;

}

I'm doing API calls and storing values in these array & dictionaries. I'd like to print the contents of the array/dictionary in LLDB during Runtime.

When i try to print these global variable, it gives me the following error.

(lldb) po assigneeArr
error: warning: Stopped in a context claiming to capture an Objective-C object pointer, but 'self' isn't available; pretending we are in a generic context
error: use of undeclared identifier 'assigneeArr'
error: 1 errors parsing expression

So how can i debug this globally declared variable??

Answer 1

Those aren't global variables; they are instance variables, so you need an instance of ViewController before you can see their value.

Once you have the instance then it's as simple as using the -> operator ( vc is the instance):

po vc->dictionary

Note: I would recommend using an underscore to prefix the names of instance variables in order to avoid confusion with parameters and local variables.

Answer 2

Finally resolved my issue by changing Enable Clang Module Debugging in Apple LLVM 7.1 Language Modules as following screen shot

Reference : https://stackoverflow.com/a/36176158/4014369

Answer 3

Please do below steps:
1. Press keyboard Command+Shift+y. It will open debug area for your project.
2. At right bottom of debug area you can find the icon of Trash . Near Trash icon you can find two options like Hide the variables view and Hide the Console . Both make on (It will display with blue border)
3. Put the break point on your ViewController where you are using your dictionary / array .
4. You can find your dictionary / array value in Left side of your debug area.
5. Please do right click on your dictionary / array . you will be get first option iePrint description of dictionary / array .
6. After clicking on it you will get its whole value in console . (Right side of debug area)

Also you can refer below screen shot for the same.