public static final function elementAt(array $array, $offset) : OptionalInterface { foreach ($array as $key => $value) { if ($key === $offset) { return Optional::of($value); } } return Optional::absent(); }
public static final function elementAt(\Traversable $traversable, $position) : OptionalInterface { $i = 0; foreach ($traversable as $value) { if ($i == $position) { return Optional::of($value); } } return Optional::absent(); }