3 ms·
Yep! It's equivalent to `AA(A|AA)?`, by way of the parent's reduction for `?`, but it's a nice option when you want to emphasize some kind of symmetry.
by Twisol 8y ago
Yep! It's equivalent to `AA(A|AA)?`, by way of the parent's reduction for `?`, but it's a nice option when you want to emphasize some kind of symmetry.