title: How to merge multiple hashes in Ruby?
body: <pre><code>h  = { a: 1 }
  h2 = { b: 2 }
  h3 = { c: 3 }
  </code></pre>
  
  <p>Hash#merge works for 2 hashes: <code>h.merge(h2)</code></p>
  
  <p>How to merge 3 hashes?</p>
  
  <p><code>h.merge(h2).merge(h3)</code> works but is there a better way?</p>