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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 what I was looking for! Direct reduction is awesome.
One of the only solutions I've seen which doesn't use a for loop. But I don't think it's neccesary to assign to an array before hand though.