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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.
This is how I wanted to implement my solution, but I couldn't find the documentation for how to get the index position of the current item in replace(). Anyone else have the same problem?
I know the answer is somehwere in the "Specifying a function as a parameter" section of MDN, but when I read over that section, nothing there stands out as a method of returning an index value. (Great solution, BTW)