Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
You would need to make a copy of m. I did this with
subm = m.map(row => row.slice())
I'm still having this issue and it's definitely returning the same EmptyNode from the tail node.Can't figure out what the hell else it's expecting.