Code Challenge : Creating a Custom Class

Basically to complete stage two, more code than described is needed (what constitutes stage three has been included in the validation for stage two).

My stage two code (which validates)

Quote.h

@interface Quote : NSObject

// Add property here
@property (strong, nonatomic) NSArray *quotes;
- (NSString *) randomQuote;

@end

Quote.m

#import "Quote.h"

@implementation Quote

- (NSArray *) quotes {
    if (_quotes == nil) {
    _quotes = [[NSArray alloc] initWithObjects:@"one", @"two", @"three", nil];

  }
 return _quotes;
}

- (NSString *) randomQuote {
    int random = arc4random_uniform(self.quotes.count);
    return [self.quotes objectAtIndex:random];
}

@end

Then on the next screen (stage 3), just press "check work" (without adding anything).

Are you getting any errors? Your code looks good as per Task 2. You can click the 'Preview' button to see any compiler errors.

Yes I am getting an error. - 'Oops! It looks like Task 1 is no longer passing.'

@interface Quote : NSObject {
NSArray *_quotes ;

// Add property here
@property (strong, nonatomic , readonly) NSArray *quotes;

- (NSString *) randomQuote;

@end

Sorry to enter in the discussions, but I am also stack with this task. It seems that for my browser I'm always missing some questions, I have this situation (on safari with Mac Mavericks) Step 2 of 3.

Screenshot

The question says : "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."

I try to do it and when I submit it says : "Bummer! Remember to use the 'arc4random_uniform()' function and return a quote as a string object." But I cannot understand where the functions comes from, is not asked in the question. Also few days ago I had the same problem and I found out I was missing a string not mentioned in the question, is it possible that with safari I miss something in the questions? Hope the image is visible.

Thanks in advance.

ok I'll try, thanks!

same here. i get the "Bummer! Remember to use the 'arc4random_uniform()' function and return a quote as a string object." Message. My Code my Quote.m:

#import "Quote.h"

@implementation Quote

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

    return _quotes;
}

@end

my Quote.h:

@interface Quote : NSObject

// Add property here
@property (strong, nonatomic) NSArray *quotes;
- (NSString *) randomQuote;

@end

I had the same problem - the arc4random_uniform() warning appeared in stage 2 (although it isn't mentioned in the instructions for that stage), then on completing stage 2 (with the arc4random_uniform in place) stage 3 asked me to "Within the implementation file we need to modify the 'randomQuote' method to return a random quote from the 'quotes' array using the 'arc4random_uniform()' function" (which had to be in place to get through stage 2).

Simply pressing check work at this stage 3 passes the challenge, as the code for stage 3 was required to pass stage 2 - possible bug in the challenge?

cant step to stage 3. Got the same message....i will skip this. its really frustrating...

I'm having trouble with step 3 of the task.

My Quote.m:

#import "Quote.h"
@implementation Quote
- (NSArray *) quotes {
    if (_quotes == nil){
        _quotes = [[NSArray alloc] initWithObjects:@"1", @"2", @"3" ,nil];
    }
    return _quotes;
}
- (NSString *) randomQuote {
    int random = arc4random_uniform();
    return [self.quotes objectAtIndex:random];
}
@end

My Quote.h:

@interface Quote : NSObject
// Add property here
- (NSString *) randomQuote;
@property (strong, nonatomic) NSArray *quotes; 
@end

EDIT: Issue resolved.

I had difficulty getting code to pass but this is what finally passed for me :

Quote.h

<p>@interface Quote : NSObject

// Add property here @property (strong, nonatomic) NSArray *quotes;

• (NSString *) randomQuote;

@end</p>

Quote.m

<p>#import "Quote.h"

@implementation Quote

-(NSArray *) quotes { if (_quotes == nil) { _quotes = [[NSArray alloc] initWithObjects:@"one", @"two", @"three", nil];

} return _quotes; }

• (NSString *) randomQuote { int random =arc4random_uniform (self.quotes.count); return [self.quotes objectAtIndex:random];

}

@end</p>

Yea... this challenge is super flukey and is really frustrating me too. I have the code in Xcode build JUST FINE. However I come to this challenge, put the same thing in, and it keeps giving me an error, with or without putting the arc4random_uniform(self.predictions.count); return [self.predictions objectAtIndex: random];

Whatever, I don't think the points really matter, as long as I'm learning the material, however it WOULD be nice if it wasn't so frustrating.... That little wheel with the +6 rainbow at the end is what really makes me keep using this site HAHA.

okay, i just caught my mistake... I was saying predictions the whole time... but even correcting for that, I'm still getting an error and even copy and pasted what they have above and its still not working....

EDIT: I guess the update did go through... I thought it wanted me to do all of it at once... Sorry for clogging up the discussion boards, I finally made it.

BTDUBS, that video you guys made was totally worth it. I love the "cinematic" effects, the macro close up shot of that flower with the ants on it, and the tiny story line you guys got going on. It does intrigue me indeed (:

Sorry for any confusion the hint has been updated to reflect what is required from task 2.