Refactoring into a Model: Challenge task 2 of 3

Question

I cannot see what is wrong with my code below when answering task 2... "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

- (NSArray *) quotes {
    if (_quotes == nil){
        _quotes = [[NSArray alloc] initWithObjects:@"What ",
                         @"is ",
                         @"wrong?", nil];

    }
    return _quotes;
}

It keeps telling me "Bummer! Remember to allocate and initialize the instance variable '_quotes' and return it from the method named 'quotes'."

Answer 1 · 2014-01-15T02:14:52Z

January 15, 2014 2:14am

Your answer should work unless you deleted the rest of the implementation that had the randomQuote method and the @end?

Answer 2 · 2014-01-15T03:34:56Z

January 15, 2014 3:34am

The rest of the implementation is still there...

import "Quote.h"

@implementation Quote

(NSArray *) quotes { if (_quotes == nil){ _quotes = [[NSArray alloc] initWithObjects:@"What ", @"is ", @"wrong?", nil];

} return _quotes; }
(NSString *) randomQuote {

return @"Some Quote"; }

@end

Answer 3 · 2014-01-15T03:41:19Z

January 15, 2014 3:41am

Sorry, I just learned about Markdown, below should be a better view of the code snippet

``` Objective C

import "Quote.h"

@implementation Quote

(NSArray *) quotes { if (_quotes == nil){ _quotes = [[NSArray alloc] initWithObjects:@"What ", @"is ", @"wrong?", nil];

} return _quotes; }
(NSString *) randomQuote {

return @"Some Quote"; }

@end

hopefully that is more readable. :)

Answer 4 · 2014-01-16T00:08:30Z

January 16, 2014 12:08am

Hi James,

Are you certain you are writing the code to the correct file? It should be 'Quote.m.'. I pasted your code from above, and it works.

Answer 5 · 2014-01-21T03:06:31Z

January 21, 2014 3:06am

The code is correct, for Quote.m Make sure the array property in challenge 1 (Quote.h) isn't set to readonly.

Answer 6 · 2014-01-24T00:39:37Z

January 24, 2014 12:39am

I'm having this problem too. I tried both my answer, (same syntax and everything) in both chrome and firefox. what gives?

Answer 7 · 2014-01-24T01:33:51Z

January 24, 2014 1:33am

ok, I think I figured it out, you can't forget to set the output data type to NSArray both on the .h and implementation file.

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James Husted

James Husted

Refactoring into a Model: Challenge task 2 of 3

7 Answers

Amit Bijlani

Amit Bijlani

James Husted

James Husted

import "Quote.h"

Amit Bijlani

Amit Bijlani

James Husted

James Husted

James Husted

James Husted

import "Quote.h"

Paul Yorde

Paul Yorde

N B

N B

Michael McLaughlin

Michael McLaughlin

Michael McLaughlin

Michael McLaughlin