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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.
Love seeing a reduce function since I'm not fully comfortable with reduce
Yes, this solution seems like a real overcomplication
This comment is hidden because it contains spoiler information about the solution
I'm not very experienced, but it is beter to use reduce here, which seems hard to read for me(at least in this form and with 3 arguments), when it can be done with a simple for loop and if's ?