Name:Unknown
Clan:BUPT
Member Since:Sep 2016
Last Seen:Mar 2017
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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 think xrange is like range, but creates the elements when it's needed instead of creating the whole list first.