Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Creating a Custom Class

Rodrigo Chousal
Rodrigo Chousal
16,009 Points
Posted by Rodrigo Chousal
Rodrigo Chousal
16,009 Points

I'm stuck...

Switch to the implementation file and implement a 'quotes' method which will allocate and initialize the _quotes instance variable only if it is 'nil'. Initialize the array with any three strings.

#import "Quote.h"

@implementation Quote

- (NSString *) randomQuote {
    if (_quotes == nil) {
    _quotes = [[NSString alloc] initWithArray: @"1", @"2", @"3", nil];
  }
    return @"Some Quote";
}

@end

1 Answer

Fernando Claussen
Fernando Claussen
9,324 Points

If you read carefully what the challenge is asking you to do you will see that it asks you to implement a quotes method, not yet the randomQuote.

it should be like this

#import "Quote.h"

@implementation Quote

- (NSArray *) quotes {
    if(_quotes == nil){
    _quotes = [NSArray arrayWithObjects:@"1",@"2",@"3",nil];
  }
  return _quotes;
}
- (NSString *) randomQuote {

    return @"Some Quote";
}

@end