From: "David A. Black" <dblack@...>
Date: 2009-07-14T22:16:07+09:00
Subject: Re: Twelve rules of Ruby

Not sure why they wrapped weirdly (at least on my screen), but here's
a correctly-wrapped version, I hope.

1. Classes are objects.
2. Objects don't "have" methods; they have the intelligence to resolve
    messages by looking for methods along their class/module lookup
    path.
3. Every instance variable you ever see in any Ruby program belongs to
    whatever object "self" is at that moment, without exception. (Which
    is one reason that understanding how "self" gets assigned is
    absolutely vital.)
4. A code block is a syntactic construct, not an object.
5. Class variables are not class variables, in the sense of belonging
    to a particular class. They are class hierarchy variables.
6. Inheritance (A < B) is not the same as, and not related to, nesting
    (A::B).


-- 
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