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.
this is the best solution i think, readable, clean and easy to understand. i love this
Ah, this is excellent, condition being arrayToFold.length > 1 then using the spread operator to put it on the far right. Very clever!
This returns r with duplicates :(