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.
Yeah, that looks a lot more elegant than my solution for sure.. lol.
I think the 0 serves as an initial value for the reduce method so you don't get an error if you get an empty array. I could be wrong though, lol.