title: How can I convert an array of hashes to an array of hash values?
body: <p>I have an array of hashes:</p>
  
  <pre><code>[{"sex"=&gt;"male"}, {"sex"=&gt;"male"}, {"sex"=&gt;"female"}]
  </code></pre>
  
  <p>How can I convert it to array of values:</p>
  
  <pre><code>["male", "male", "female"]
  </code></pre>