How can one describe a rock-paper-scissors relationship between 3 items?
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Madara Uchiha
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Published on 2012-10-03T21:25:16Z
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2012/10/03
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Let's say I have the following structure:
abstract class Hand {}
class Rock extends Hand {}
class Paper extends Hand {}
class Scissors extends Hand {}
The goal is to make a function (or a method) Hand::compareHands(Hand $hand1, Hand $hand2), which would return the winning hand in a rock-paper-scissors match.
That would be very easy with a bunch of ifs, but the point is to have a more robust structure, that's relying on polymorphism rather than on procedural code.
P.S. this is done in actual production code, if someone is asking. This isn't some sort of challenge or homework. (It's not really rock-paper-scissors, but you get the point).
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