/**
* This method unsubscribes a listener.
*
* @access public
* @static
* @param IHashMap\Type $xs the left operand
* @param ITuple\Type $entry a tuple containing the key and listener
* @return IHashMap\Type the map
*/
public static function unsubscribe(IHashMap\Type $xs, ITuple\Type $entry) : IHashMap\Type
{
$k = $entry->first();
if ($xs->__hasKey($k)) {
$ys = ILinkedList\Module::delete($xs->item($k), $entry->second());
$zs = IHashMap\Module::putEntry($xs, ITuple\Type::box2($k, $ys));
return $zs;
}
return $xs;
}
/**
* This method returns the numerically lowest value.
*
* @access public
* @static
* @param IHashMap\Type $xs the left operand
* @param IHashMap\Type $ys the right operand
* @return IHashMap\Type the minimum value
*/
public static function min(IHashMap\Type $xs, IHashMap\Type $ys) : IHashMap\Type
{
return IHashMap\Module::compare($xs, $ys)->unbox() <= 0 ? $xs : $ys;
}
