title: How do I use boolean variables in Perl?
body: <p>I have tried:</p>
  
  <pre><code>$var = false;
  $var = FALSE;
  $var = False;
  </code></pre>
  
  <p>None of these work. I get the error message</p>
  
  <pre>Bareword "false" not allowed while "strict subs" is in use.</pre>