title: ruby pipe operator
body: <p>I'm new to ruby, and I saw this code snippet</p>
  
  <pre><code>1|2
  </code></pre>
  
  <p>and it returns 3</p>
  
  <p>What does the <code>|</code> operator actually do? I couldn't seem to find any documentation on it. Also, in this context is it referred to as the "pipe" operator? or is it called something else?</p>