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iOS Build a Simple iPhone App with Objective-C Creating a Data Model Creating a Data Collection

h l
h l
Courses Plus Student 377 Points

getting error initializing array in "creating a data model/collection" lesson

in the creating a data model/collection lesson the directions are to switch to the implementation file, and under the viewDidLoad method, initialize the shoppingList array with 'toothpaste', 'bread', 'eggs'

i get the error “Remember to use the keyword 'self' to access the 'shoppingList' property and initialize it with the 3 items mentioned above.”

i am working off of a previous example and don’t understand the “self” part of this error message. thanks for your help.


import "ViewController.h"

@implementation ViewController

  • (void)viewDidLoad { [super viewDidLoad];

// Add your code below! NSArray *shoppingList = [[NSArray alloc] initWithObjects: @'toothpaste', @'bread', @'eggs', nil]; }


1 Answer

Almost. You forgot to add the self keyword, and you don't need this part: NSArray *shoppingList

    self.shoppingList = [[NSArray alloc]initWithObjects:@"toothpaste",@"bread",@"eggs",nil];
    self.shoppingCart = [self.shoppingList objectAtIndex:2];