/**
* Removes the first occurrence of the specified element in this list.
*/
public function remove1(Object $o)
{
if ($o == null) {
for ($e = $this->header->next; $e != $this->header; $e = $e->next) {
if ($e->element == null) {
$this->remove($e);
return true;
}
}
} else {
for ($e = $this->header->next; $e != $this->header; $e = $e->next) {
if ($o->equals($e->element)) {
$this->remove($e);
return true;
}
}
}
return false;
}
