Module::Concerning

Bite-sized separation of concerns

We often find ourselves with a medium-sized chunk of behavior that we'd like to extract, but only mix in to a single class.

Extracting a plain old Ruby object to encapsulate it and collaborate or delegate to the original object is often a good choice, but when there's no additional state to encapsulate or we're making DSL-style declarations about the parent class, introducing new collaborators can obfuscate rather than simplify.

The typical route is to just dump everything in a monolithic class, perhaps with a comment, as a least-bad alternative. Using modules in separate files means tedious sifting to get a big-picture view.

Dissatisfying ways to separate

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