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

Posted by Adam Samson
Adam Samson
373 Points

Unclear instruction, where to use "self" keyword?

I'm unclear on where using the keyword "self" is necessary for initialising the array.

ViewController.h 
#import "UIViewController.h"

@interface ViewController : UIViewController

@property (strong, nonatomic) NSString *shoppingCart;
@property (strong, nonatomic) NSArray *shoppingList;
@end
ViewController.m 
#import "ViewController.h"

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Add your code below!
    NSArray *shoppingList = [[NSArray alloc] initWithObjects: @"toothpaste", @"bread", @"eggs", nil];
    self.shoppingListLabel.text = [shoppingList objectAtIndex: 1];
    self.shoppingListLabel.text = [shoppingList objectAtIndex: 2];
    self.shoppingListLabel.text = [shoppingList objectAtIndex: 3];

}

@end

1 Answer

Kumar S
PLUS
Kumar S
Courses Plus Student 5,974 Points
Kumar S
Kumar S
Courses Plus Student 5,974 Points

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

In step 3: self.shoppingCart = [self.shoppingList objectAtIndex:2];