title: How to concatenate two atoms/strings?
body: <p>I'm trying to find out how to concatenate two atoms:</p>
  
  <pre><code>A = 'my ', 
  B = 'atom',
  </code></pre>
  
  <p>How can I concatenate these two atoms so that the result is:</p>
  
  <pre><code>'my atom'
  </code></pre>
  
  <p>?</p>