title: Get the string after a string from a string
body: <p>what's the fastest way to get only the <strong>important_stuff</strong> part from a string like this:</p>
  
  <pre><code>bla-bla_delimiter_important_stuff
  </code></pre>
  
  <p><code>_delimiter_</code> is always there, but the rest of the string can change.</p>