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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.
Good to know thanks!
Hi, I see a lot of solutions on codewars that use len(x) (or min, lower, count...) in loops or throughout the code rather than doing it once and saving the result in a reusable variable, which I would think is more efficient. Is it not? Why do you use it this way? Readability? Code minimisation?