title: Evaluate escaped string
body: <p>I have some strings in a file that are already escaped. So the content of the file looks like this:</p>
  
  <pre><code>Hello\nWorld. This is\tGreat.
  </code></pre>
  
  <p>When I read the file, I get <code>\n</code> as two different characters instead of one.</p>
  
  <p>How can I convert an escaped string to a non-escaped one?</p>