title: ruby - How to replace a hash key/value with another key/value
body: <p>I have a hash </p>
  
  <pre><code>  hash = {"some_wierd_name"=&gt;"cheesemonster", .....}
  </code></pre>
  
  <p>and I want this hash as</p>
  
  <pre><code>  hash = {"preferred_name"=&gt;"cheesemonster", ......}
  </code></pre>
  
  <p>What is the shortest way to do that?</p>