From: Pixel <pixel@...>
Date: 2001-11-30T22:44:18+09:00
Subject: [ruby-talk:27063] Re: thoughts on virtual base classes, interfaces

Robert Feldt <feldt@ce.chalmers.se> writes:

> On the other hand I don't have a clear-cut way to choose between a Mix-in
> or a Super class. Any can share their heuristics? Most flexible is often
> to only use Mix-ins, I guess? I would think an answer to this question
> suitable for the FAQ since its likely to be an issue for newcomers
> learning about the Module/Class dicothomy and their uses.

Isn't a mix-in "interface inheritance", aka it should stateless (per object).