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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.
Dates and times should be treated as such, so I don't see how this is considered best practice. This is a clever and concise way to manipulate a string for this specific problem.
I agree dates and times should be treated as such.
There was no point in constructing the integer array