title: String small replacement
body: <p>I am searching for a simple way to remove underscores from strings and replacing the next character with its upper case letter.</p>
  
  <p>For example:</p>
  
  <pre class="lang-none prettyprint-override"><code>From: "data" to: "Data"
  From: "data_first" to: "DataFirst"
  From: "data_first_second" to: "DataFirstSecond"
  </code></pre>