From: Sebastian Hungerecker <sepp2k@...>
Date: 2007-08-15T04:24:45+09:00
Subject: Re: attr_* position in a class and their results

Arno J. wrote:
> class Vartest_before
>   def init
>     @instance_variable = "I belong to the instance"
>   end
>
>   attr_accessor :instance_variable

This defines a method instance_variable

>   def instance_variable
>     @instance_variable = "Forced"
>   end
> end

This defines the method instance_variable again. The version created by
attr_accessor doesn't exist anymore.

> class Vartest_after
>   def init
>     @instance_variable = "I belong to the instance"
>   end
>
>   def instance_variable
>     @instance_variable = "Forced"
>   end
>
>   attr_accessor :instance_variable
> end

This time it's the other way around: First you define the method with
def, then you redefine it with attr_accessor. It's like doing
def bla()
  1
end
def bla()
  2
end
Everytime you call bla, it will return 2 because the second definition
overrides the first one.


HTH,
Sebastian
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