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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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Hey, I had issues with that case at first as well, but remember the structure of the variables does not depend on any strings or integers within them. i.e ['[','s'] has the same structure as [1,2] if I am not mistaken. So the data types within the list actually do not matter, what does matter is the structure, i.e [] of the list. That case is used to invalidate string conversions of the entire list.
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Some well done List comprehension. Extremelly clever solution
Agreed
Great initiation Kata