You can only inherit from one class in ruby. You can mixin multiple modules into... | Hacker News

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joevandyk on July 6, 2014 | parent | context | favorite | on: Why composition is often better than inheritance

You can only inherit from one class in ruby. You can mixin multiple modules into a class. So they aren't entirely equivalent.

stouset on July 6, 2014 [–]

Under the hood, mixing in modules actually is inheritance. An anonymous class is created that has all the module's methods, and this class is added to the inheritance hierarchy.

They are quite literally identical, even if Ruby tries it's best to hide that fact.

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