From: Summercool Summercool <summercoolness@...>
Date: 2007-09-16T22:14:08+09:00
Subject: Re: code quiz #1

On Sep 16, 5:13 am, dbl...@wobblini.net wrote:

> It's definitely a potential issue. You can protect against it by
> returning a dup of the array:
> 
>    class C
>      attr_writer :a
>      def a
>        @a.dup
>      end
>    end


can using just the reader but not the writer protect the data better?


> > 3) what is the "a = 123" near the line "class Foo" near the top of the
> > program?  What is it, it is not local, not class variable, not instance
> > variable, not global... so what is it?  the program is not complaining
> > the existence of it.
> 
> It is local, actually. It's a local variable scoped to the outer level
> of the class definition body. It disappears inside method definitions,
> because "def" always starts a completely new local scope.


so is there much use of the local variable in the class level scope? 
can you even have code / loop doing things... but when does it get 
executed?

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