title: Binding a Function to "Search" button in Keyboard
body: <p>I have an UITextField to search the word that typed there. I set the returnKeyType as UIReturnKeySearch. But I couldn't figure how to bind a function that I created, to the "Search" button at the keyboard. </p>
  
  <pre><code>self.searchWord.returnKeyType=UIReturnKeySearch;
  </code></pre>
  
  <p>How can I do that? Thanks.</p>