title: String "de-concatenation"
body: <p>I have two strings like this</p>
  
  <pre><code>string s = "abcdef";
  string t = "def";
  </code></pre>
  
  <p>I would like to remove t from s.  Can I do this like this?</p>
  
  <pre><code>s = s - t?
  </code></pre>
  
  <p><strong>EDIT</strong></p>
  
  <p>I will have two strings s and t, t will be an ending substring of s.  I want to remove t from s.</p>