Q:

JSONKit parsing issue

I am receiving a JSON object like this:
{"data":null,
 "error":1,
 "error_code":"InvalidSID",
 "sid":"",
 "num_rows_total":0,
 "last_insert_id":0,
 "error_info":"Comment...",
 "error_data":[]}

and JSONKit using this code:
NSString *responseString = [request responseString];
NSDictionary *requestDictionary = [responseString objectFromJSONString];
if([[requestDictionary objectForKey:@"error"] intValue]) {
    if([@"InvalidSID" isEqualToString:[requestDictionary objectForKey:@"error_code"]]) {
        [self.navigationController popViewControllerAnimated:YES];
    }
}

produces such output:
{
data = "<null>";
error = 1;
"error_code" = InvalidSID;
"error_data" = ();
"error_info" = "Comment...";
"last_insert_id" = 0;
"num_rows_total" = 0;
sid = "";
}

The problem is, that this if statement is never called because of missing quotation marks around InvalidSID. Is there any known problem with JSONKit that makes those quotation marks disappear?

A:

You are confusing the "description" output from NSDictionary with the value of a key. You also could have saved yourself a lot of time (that is the time you posted this to the time you get some response) by using some simple detective work.
I assume that what you call "output" above is the result of 
NSLog(@"%@", requestDictionary);

So after that line try this:
// Just to be complete
    id ee = [requestDictionary objectForKey:@"error"];
    NSLog(@"error=%@ intValueOfError=%d classOfErrorCode=%@", 
        ee, [ee intValue], NSStringFromClass([ee class]) );

// Where I suspect you may discover something
    id ec = [requestDictionary objectForKey:@"error_code"];
    NSLog(@"errorCode=%@ classOfErrorCode=%@", 
        ec, NSStringFromClass([ec class]) );

We do that since something is obviously wrong here, we want to find out more about the objects we have in hand. I am going to guess if you do the above you will discover something  you did not expect.

