From: Meinrad Recheis <meinrad.recheis@...>
Date: 2003-05-08T14:48:39+09:00
Subject: Re: access a variables name?

Brian Candler wrote:

>On Thu, May 08, 2003 at 04:24:02AM +0900, meinrad.recheis wrote:
>  
>
>>is it possible to access the variable-name of an object?
>>
>>like (pseudo ruby code):
>>
>>@instance_var = []
>>@instance_var.name = '@instance_var'
>>    
>>
>
>  class Foo
>    attr_accessor :bar
>  end
>  a = Foo.new
>  a.bar = 1
>  p a                              #>> #<Foo:0x81c6600 @bar=1>
>  p a.instance_variables           #>> ["@bar"]
>
ok, this is actually all i need, for my purpose

>  a.instance_eval {@bar}           #>> 1
>  a.instance_variable_get("@bar")  #>> 1
>  a.instance_variable_set("@baz",2)
>
but, what's that? i didn't find instance_variable_get/set in ruby's 
documentation

>  p a                              #>> <Foo:0x81c6600 @baz=2, @bar=1>
>
>The last two examples show reading/writing instance variables by name, is
>that what you were trying to do?
>
yes exactly. thanks brian

>
>Regards,
>
>Brian.
>
>  
>