title: Filtering a list of tuples
body: <p>I have a list of tuples and I want to filter out the all elements where the second value in the tuple is not equal to 7.</p>
  
  <p>I do:</p>
  
  <pre><code>valuesAsList.filter(x=&gt;x._2 != 7)
  </code></pre>
  
  <p>Can I use wildcard notation to make this even shorter?</p>
  
  <p>Thanks.</p>