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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.
Exact solution.
If you iterate a list while modify it sometimes it gives strange outputs.
I just finished my first practice and saw this. This is fire, in just one line, so neat.