On Sat, Apr 16, 2016, at 01:51 AM, Fjölnir Ásgeirsson wrote: > -[NSArray valueForKey:] simply calls through to its members, so it makes > sense that the lastObject would bubble down to the strings themselves. > > You should probably be using a dictionary. If order matters; something > like > https://github.com/fjolnir/DatabaseKit/blob/master/Source/Utilities/DBOrderedDictionary.m > should work.
Yes, this is important to note: NSArray overrides -valueForKey: to effectively implement `map` for its elements. This is documented here: <https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/#//apple_ref/occ/instm/NSArray/valueForKey:> --Kyle Sluder > > —fjõlnir > > > On 16 Apr 2016, at 15:18, Patrick J. Collins wrote: > > > If I have: > > > > NSArray *arr = @[ > > @[@"lol", @"omg"], > > @[@"rofl", @"copter"], > > ... > > ]; > > > > I want to be able to do: > > > > [arr valueForKey:@"lastObject"] > > > > and get back: > > > > @[@"omg", @"copter"] > > > > However, when I try this, I keep getting bad access saying that the > > object doesnt respond to lastObject... ? > > > > What am I doing wrong? > > > > > > Patrick J. Collins > > http://collinatorstudios.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Objc-language mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/objc-language/archive%40mail-archive.com This email sent to [email protected]
