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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.
However it has the benefit of only resorting to reduce, a function that can do anything, to perform its textbook application, hence better conveying intent. Maintanability saves more money than micro-optimization.
Agreed!
but how fast ...