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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.
I got it now, although Englishwise doesn't make sense totally.
Thanks
Wow, great!
Although your code syntax is fine, but I don't believe accumulator is good name for the first parameter of reduce function as it doesn't add up, it multiplies.