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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.
Actually it was the same for me but looking at other peoples solutions actually improved my future solutions... this website is one of the most helpful things ive used
Don't get discouraged, this is the way we all learn.
You have to write your own "for loop" iterating over all elements at least several times before you start using shorter built-in methods.
Only this way you can learn and understand how this methods work internally and be aware of their limits as well.
I feel like that for nearly every solution I look at lol. Now I simply think of the shortest way to write the code everytime I start a new kata.
As a newbie, it feels very frustrating taking a looong time to come up with a working solution and seeing this kind of answer at the top. Hope I get at that level some day.
Good job, guys.