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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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Trying to solve this kata with Javascript. I've stucked on Incorrect hex-string length. What kind of output should i do to pass this test? Thanks. P.S. I've tried return false and return 'Incorrect hex-string length', both are wrong.
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