All the sources codes "But why ?"page 20

<?php
$a=1;$b=0;
if(!$a<$b) echo 'yes'; 
?>

	public void doNothing(ActionEvent e) {
	}

function isNegative(number) { 
  if (number.match(/^-\d+$/)) {
    return true;
  } else {
    return false;
  }
}