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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.
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this should work, maybe it's a test issue depending on what is the language that you are doing this
No, they don't match in the way this task considers valid. When a brace closes, it has to close a brace of its kind. The closing brace
]is not valid, becaue the most recent open brace is not[, it is(.