title: Coffeescript - Finding substring with "in"
body: <p>In Coffeescript the following gives <code>true</code></p>
  
  <pre><code>"s" in "asd" # true
  </code></pre>
  
  <p>but this gives false</p>
  
  <pre><code>"as" in "asd" # false
  </code></pre>
  
  <ul>
  <li>Why is this?</li>
  <li>It happens with strings with more than 1 character?</li>
  <li>Is <code>in</code> not suited for this task?</li>
  </ul>