Filter NSArray from NSDictionary with specific key value

Question

I have an NSArray NSDictionary that looks like this.

({
  a = 'one'
  b = 'two'
},
{
  a = 'ten'
  b = 'eleven'
})

How can I filter out all the 'b' key values that will eventually return me an NSArray like this,

('two','eleven')

Is it possible to do this simply by using NSPredicate without having a loop?

+3

objective-c nsarray nsdictionary

Min soe 09 Mar '12 at 9:23

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1 answer

Vladimir · Accepted Answer · 2012-03-09T09:26:12+0000

You can do this with a single method in NSArray:

NSArray *resultArray = [yourArray valueForKey:@"b"];