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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.
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aha... i must be trippin...
I thought changes in shallow copy will affect both lists
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What's the difference between mutating the list VS changing the list?
I thought it's the same thing...
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Does this mean: this solution did not satisfy all conditions of the question? It says in description: "Do not mutate the original array/list". This solution changed the original list, hence, it's a "wrong" solution.
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This comment is hidden because it contains spoiler information about the solution