Question

EDIT:

The Code:

//stores dictionary of questions

- (void)requestFinished:(ASIHTTPRequest *)request
{   
    NSData *responseData = [request responseData];
    NSString *json = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    NSDictionary *qs = [json objectFromJSONString]; 
    self.questions = qs;
    NSLog(@"%@", questions);
    [json release]; 
    [self setQuestions];
    [load fadeOut:load.view withDuration:0.7 andWait:0];
    UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:@"Start" style:UIBarButtonItemStylePlain target:self action:@selector(start:)];          
    self.navigationItem.rightBarButtonItem = anotherButton;
}

I have the following items in an NSDictionary:

(
   {
        max = 120;
        min = 30;
        question = "Morning Bodyweight (Kg)";
        questionId = 1;
        questionNumber = 1;
        sectionId = 1;
        type = TextInput;
    },
    {
        question = "Morning Urine Colour";
        questionId = 2;
        questionNumber = 2;
        sectionId = 1;
        type = ImagePicker;
    },
    {
        max = 120;
        min = 30;
        question = "Evening Bodyweight (Kg)";
        questionId = 3;
        questionNumber = 3;
        sectionId = 1;
        type = TextInput;
    },
    {
        question = "Evening Urine Colour";
        questionId = 4;
        questionNumber = 4;
        sectionId = 1;
        type = ImagePicker;
    },
    {
        max = 90;
        min = 40;
        question = "Morning Heart Rate (BPM)";
        questionId = 5;
        questionNumber = 5;
        sectionId = 1;
        type = TextInput;
    },
    {
        question = "Time of Month (TOM)";
        questionId = 6;
        questionNumber = 6;
        sectionId = 1;
        type = Option;
    }
)

I want to remove the last element:

    {
        question = "Time of Month (TOM)";
        questionId = 6;
        questionNumber = 6;
        sectionId = 1;
        type = Option;
    }

Is there a pop() equivalent for the NSDictionary? If not how is it possible to remove the last element?

Answer 1

This looks to be (or could be made to be) an array of dictionaries. If you have these dictionaries as the objects of an NSMutableArray, then you can use – removeLastObject. Otherwise, you’re SOL since even NSMutableDictionary has no such method.