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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.
THE BUG with the kata is that it requires use of
double
to handle monetary values.Using floating point data types to represent money is bad. Tests should test for it.
My "attempt" that passed should be a call for additional testing.