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Re: NSPredicate or Collection operators?
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Re: NSPredicate or Collection operators?


  • Subject: Re: NSPredicate or Collection operators?
  • From: Alex Zavatone <email@hidden>
  • Date: Mon, 13 Jul 2015 10:52:42 -0400

Ahh, well, it turns out that I had the code right in the first place.

Here it is if anyone needs to do the same thing.

   BOOL isItemPresentWithIdenticalValue = NO;

    NSArray *allObjects = [self.geofenceObjects allValues];
    NSArray *allOccurrencesOfSourceValue = [allObjects valueForKey:@"smi" ];

    isItemPresentWithIdenticalValue = [allOccurrencesOfSourceValue containsObject:thingWeAreCheckingFor] ;





On Jul 13, 2015, at 10:35 AM, Alex Zavatone wrote:

> Hi all.  I've got a dictionary of objects that contain properties and need to check if one object has a certain value.
>
> I was thinking I could use collection operators and build an array where the value of an an object's property matches that I'm looking for.
>
> Then if the array contains that value, we have a match.
>
> If each objects in the array has a bunch of properties and one of those properties is called "thing", how would I build an array where the contents of thing would equal a certain value?
>
> I'm sure I could walk the array, but I expect there is a more efficient method already built in to Cocoa for this.
>
> Thanks in advance.
>
> Alex Zavatone
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 >NSPredicate or Collection operators? (From: Alex Zavatone <email@hidden>)

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