All the sources codes "But why ?"page 22

// Convert to negative number
varInt := StrToInt('-' + IntToStr(varInt));

if ($(this).hasClass('active')) {} else {			// WTF :|
	advancedSearchApla.show();
	$(this).addClass('active');
}

<?php

if ($someVariable == "some value") {
}
else {
  // do a lot of stuff, like echo html and more
}