title: How do I easily strip just a comma from an NSString?
body: <p>I have a UILabel with the following text:</p>
  
  <pre><code>Medium, Black
  </code></pre>
  
  <p>What I intended to do was grab the words in the string and insert each into a mutable array so I could use each title later on to identify something.</p>
  
  <p><strong>Here's how I done this:</strong></p>
  
  <pre><code> NSMutableArray *chosenOptions = [[[[cell tapToEditLabel] text] componentsSeparatedByString: @" "] mutableCopy];
  
      NSString *size = [chosenOptions objectAtIndex:0];
      NSString *colour = [chosenOptions objectAtIndex:1];
  </code></pre>
  
  <p>I've logged these two NSString and size is returning "Medium," and colour is correctly returning "Black".</p>
  
  <p><strong>My comparison result is always false because of the comma:</strong> </p>
  
  <pre><code>itemExists = [[item colour] isEqualToString:colour] &amp;&amp; [[item size] isEqualToString:size] ? YES : NO;
  </code></pre>
  
  <p>That comma causes itemExists to always equal NO.</p>
  
  <p>Would appreciate a simple solution in code please.</p>
  
  <p>The solution needs to only strip commas and not other characters. When dealing with clothing sizes for females I use sizes in a string like this: "[8 UK]" so remove non-alphanumeric characters would remove these. So I really need a solution to deal with just the commas.</p>
  
  <p>Thanks for your time.</p>