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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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interesting~
why compress code like this?
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I think
i(ignore case) isnt necessary in this caseI think it might be better using
===or!==.I misunderstand the question. Finally see clearly about the definition.