title: What is wrong with this perl regular expression?
body: <p>I'm trying to go through a file, and only print out words without a specific letter, specified in a character class.</p>
  
  <pre><code> if ( $+ =~ [^Aa] )
  {
  print $_;
  }
  </code></pre>
  
  <p>But this doesn't work. What am I doing wrong? The above example should give back a list of words without 'a' or 'A' in them, but it doesn't seem to be working. </p>