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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.
resolved
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In case you want to write your own katas or translations, this guide might come in handy. Codewars also has a Gitter channel, where you can ask questions (although there aren't many active users).
See also https://github.com/Codewars/codewars.com/wiki/Error-messages:-Unknown-error.
Try submit instead of "run tests".
When there are no example tests, running tests would give you the Unknown error.
Submitting your solution directly should work.
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Could you post your solution as a spoiler? The javascript version seems to be working for me.
I tried as well and my code did not work either. My code worked on console in Chrome...
Any idea?