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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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You could also use (+b/5)|0 insted of ~~(+b/5) for Math.floor.
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In short, that the value for legs is odd
For more shorter ;-)
In the specail range(Int32),
~~equals toMath.floorhttp://stackoverflow.com/questions/7310109/whats-the-difference-between-and-in-javascript