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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.
Read docs, benchmark, know asymptotic analysis...
how do you find out how quickly something runs?
Didn't know about the gap in performances [I knew
Array.fromis slow, though, but I code for fun here], I am going to play with it some moreThis comment is hidden because it contains spoiler information about the solution