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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.
What does the ...Object here do? I've just seen the three dots in destructuring of arrays like const [head, ...tail] = my_array.
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You could have omitted a few unnecessary blank characters to improve further!
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Very, very helpful indeed, could not make sense of this solution myself. The trick really is that the person does not think about "tokens" in the sense of "whole words", but rather simply searches for strings like "_f" or "-F" or "_b" or "_B" etc.