To clarify: when I said "they" communicate by message passing, I meant e.g. interactor + presenter, not functional core / imperative shell.
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I just hope VIPER doesn’t become mythologized like MVC, that would be truly harmfull
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Word. Key learning point is: "where should I put my boundaries?"
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My answer: use boundaries to isolate responsibilities and knowledge, and to separate impure from pure. Dumb data moves across.
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the impure being uikit and the pure being your logic, essentially?
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Maybe. Probably a lot of your logic is impure, too. Messaging between these "actors" is (potentially) impure.