title: Scheme Character Comparison
body: <p>Let's say I have a list like this one:</p>
  
  <pre><code>(define test '(r x -))
  </code></pre>
  
  <p>I want to know how can I distinguish each of the values in the list, for exaple:</p>
  
  <p><code>(define (distinguish test) (equal? (car test) r))</code> -> Of course this returns error, but I would like it to return #t or something like that.</p>
  
  <p>Thanks for the help!</p>