From: James Edward Gray II <james@...>
Date: 2005-12-07T23:30:33+09:00
Subject: Re: Mixins and variables

On Dec 6, 2005, at 11:06 PM, Johannes Friestad wrote:

> Hi,
> I'm new to Ruby, and trying to figure out how the inheritance/mixin  
> works:
> I can't figure out how to set an instance variable with a mixin method
> from the object's initialize().

I see you have your answer, so let me just make some general comments:

> Example:
> -----------------
> module TestMod
>   def x
>     @x
>   end
>   def x=(arg)
>     @x=arg
>   end

You can replace the last six lines with:

attr_accessor :x

> end
>
> class TestClass
>   include TestMod
>   def initialize
>     x=('alpha')

self.x = 'alpha' # as discussed, or just @x = 'alpha'

>     printf("x=%s\n", x)

And we would usually write that as:

puts "x=#{x}"

>   end
> end

Hope that gives you an idea or two.

James Edward Gray II