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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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Why is using substr or slice better than just doing x[0] in this case?
Good Solution
Nice
substr not good - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/substr
I like this, but I think the two line solution is more readable.