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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.
Actually I guess, it might be related to the fact that we loop through array here which is an ordered element, as we can think comapre to objects which are unordered element.
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This seems like a thing of beauty
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Why specify multiplying in order? Commutative property of multiplication I think its called, a * b * c = b * a * c , order doesn't matter
How can you return an unsigned value of negative 1 for the rust version? u64 is unsigned. if it doesn't fit I need to return -1? This seems like nonsense and obviously you can't get a function to compile that requires a -1 value for an unsigned integer. Thats why its unsigned.
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This is why I joined this site. PHP is such a powerful language. I have never even heard of this function and here it is, making this problem a one liner. Well done.