Web Reference: Sep 3, 2025 · Ruby's module system provides elegant solutions for sharing behavior across unrelated classes while keeping your code organized. In this tutorial, you'll understand how to leverage modules to write more modular, reusable Ruby code that's easier to maintain and extend. It now makes sense to introduce another language feature in Ruby: modules. In Ruby, modules are somewhat similar to classes: they are things that hold methods, just like classes do. Module constants are named just like class constants, with an initial uppercase letter. The method definitions look similar, too: Module methods are defined just like class methods. As with class methods, you call a module method by preceding its name with the module's name and a period, and you reference a constant using the module name and two co...
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