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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.
@Elnene0205
The second call is outside of the loop, so it's not being called N times, only 2 times, which is negligible.
How is this best practice? Not only it's completely unreadable, but it's also O(n^2) whilst it's trivial to fit O(n) which is more readable in couple of lines?