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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.
parseInt() is tricky little one and + is super convinient way to convert string (which clearly will be the number) is using Number() behind the scene, and parseInt() is doing shit lot more behind the scene, and btw you can get significantly different output by using different redix which is consider best practices to use anyway.
EDIT:
Thanks for the question, I just notice how much I learnd over the months :D
So what is the difference between parseInt and the unary operator? I see that they achieve the same output, but can you elaborate?