Why not write it like so... Sandor Szatmari
> On Jul 13, 2015, at 10:52, Alex Zavatone <z...@mac.com> wrote: > > 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] > ; BOOL itemIsPresentWithIdenticalValue = [[[self.geofenceObjects allValues] filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"smi == %@", thingWeAreCheckingFor]] count] > 0; That is if all you want to know is 'if an object exists with a value' (Written in mail, forgive any typos) > > > > > >> 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 >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/cocoa-dev/zav%40mac.com >> >> This email sent to z...@mac.com > > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/admin.szatmari.net%40gmail.com > > This email sent to admin.szatmari....@gmail.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
