title: Match full stop in a sentence using perl
body: <p>how can I match full stop (period) in a sentence, but I don't want to match floating numbers or words that contain numbers?</p>
  
  <p>eg. </p>
  
  <pre><code>$sen = "I'm going to match full.stop in sentence 3.142";
  if ($sen =~ (s/\.//)) {
      print $1;
  }
  </code></pre>
  
  <p><strong>output:</strong></p>
  
  <pre><code>fullstop
  </code></pre>
  
  <p>In this example I only want to match words or alphanumeric words not numbers.</p>