objective-c: array enumeration using keypath

Question

I have an array of Person objects (which has a number of attributes). I want to make another array with just the Person's "fullname" attribute. Is there a simple way to do this, other than the obvious one: iterate over the original array, and copy over the fullname one-by-one into another array? Can we do this initWithArray: and tell it to use the object's fullname property when copying?

Vladimir · Accepted Answer · 2011-08-01 19:27:16Z

9

NSArray indeed has built-in method for that:

NSArray *nameArray = [personArray valueForKey:@"fullname"];

answered Aug 1, 2011 at 19:27

Vladimir

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1 Comment

Perception Over a year ago

Isnt valueForKeyPath an NSDictionary method?

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