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Ruby supports extending objects with methods from modules. It's one of the most unique and cool features of Ruby.

A Ruby module is like a class, except you don't instantiate a module. Modules consist of methods that can be mixed in to a Ruby class. In Ruby, we use a module to collect methods that may be mixed in ...

One of the largest problems plaguing Ruby implementations (and plaguing some other language implementations, so I hear from my Pythonista friends) is the ever-painful story of “extensions”. In general ...