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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 the evaluation program has an issue. I keep having the same error with my code: "With expr = "3 4 9 / *": 2 should equal 0". This expression should not equal 0. Same thing happens when I atempt to pass the kata...