Re: Checking One Array Against Another
Re: Checking One Array Against Another
- Subject: Re: Checking One Array Against Another
- From: Pierce Freeman <email@hidden>
- Date: Sat, 29 Nov 2008 11:07:52 -0800
- Thread-topic: Checking One Array Against Another
Okay... That makes sense. :)
Thanks for your (and everyone else's) help.
Sincerely,
Pierce F
On 11/29/08 10:58 AM, "Ashley Clark" <email@hidden> wrote:
> On Nov 29, 2008, at 12:47 PM, Pierce Freeman wrote:
>
>> NSMutableSet *openApplicationsSet = [NSSet
>> setWithArray:openApplications];
>
> While openApplicationsSet is declared to be an NSMutableSet you are
> not creating one. Your assignment should be [NSMutableSet
> setWithArray:...]
>
>
>> NSSet *allowedApplicationsSet = [NSSet
>> setWithArray:applicationsAllowedMutableArray];
>>
>> NSMutableSet *badApplicationsSet = [openApplicationsSet
>> minusSet:allowedApplicationsSet];
>
> The minusSet: method doesn't return a new object. It mutates the
> receiver, in this case openApplicationsSet, by removing items it
> shares in common with the passed in set, allowedApplicationsSet.
>
>> NSAlert * askToContinue = [NSAlert alertWithMessageText:@"Warning!"
>> defaultButton:@"Continue"
>> alternateButton:@"Quit"
>> otherButton:nil
>> informativeTextWithFormat:@"Quit %@.", badApplicationsSet];
>
>
>
> Ashley
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