title: Sum an Array - Objective-C
body: <p>I'm just starting out and I'm looking for an easy way to sum a simple array. I've read into apple developer site on key value coding and I don't understand how to apply that to my array or if that's the appropriate way to sum this.</p>
  
  <p>My stumbling block with the key value coding is the .keypathToProperty - I can sort of understand that you need a further reference in a 2D array but they don't show the array code, only the keypath to the title of the row so I can't figure it out yet.</p>
  
  <pre><code>NSMutableArray *numArray = [NSMutableArray arrayWithCapacity:4];
      [numArray addObject:num1];
      [numArray addObject:num2];  
      [numArray addObject:num3];
      [numArray addObject:num4];
  </code></pre>
  
  <p>I appreciate the replies!</p>
  
  <p>Thanks</p>
  
  <p>Graham</p>