/**
*
*/
public function update($iterable)
{
if ($iterable !== null) {
if ($iterable instanceof Mapping) {
if (count($this) > 0) {
foreach ($iterable->items() as list($elem, $count)) {
$this[$elem] = $count + $this->get($elem, 0);
}
} else {
parent::update($iterable);
}
} else {
foreach ($iterable as $elem) {
$this[$elem] = $this->get($elem, 0) + 1;
}
}
}
}
