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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.
poor mathematics, great
Like me, you used && in your IF statement, where || would be better, allowing you to bail out early if the conditions fail.
Also, the else is unnecessary; it's implied if the code got that far.