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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.
done
For starters:
%is a general purpose remainder operator, while&is a bitwise operator. It wouldn't be surprising for bitwise operations to be faster than general purpose remainder operations (think of C).==to compare with 0, use===. It's also slightly faster because of the lack of type checking and conversionThis comment is hidden because it contains spoiler information about the solution