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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.
you can write [...Array(columns).keys()] and get the same result as _.range(columns) without using lodash
I agree - this isn't fixing the bugs. If the challenge was to refactor the code this would be a winner, but that's not the case.
Uhh... Is this really in the spirit of the challenge? =P
~33ms
~45ms
~50ms