From: "David A. Black" <dblack@...>
Date: 2005-05-07T02:30:12+09:00
Subject: Re: object reference handle (like perl's reference to scalar)

Hi --

On Sat, 7 May 2005, Patrick Hurley wrote:

> On 5/4/05, Eric Mahurin <eric_mahurin@yahoo.com> wrote:
>> In ruby, is there a way to get a handle of an object reference?
>>  In perl, this is the \ operator:
>>
>> $x = 1; # \$x is a handle to change $x
>> $a = [1,2,3]; # \$a->[1] is a handle to change an element in $a
>>
>
> Not the "ruby way," but how about:
>
> a = [1, 2,  3]
> b = a.object_id
> c = ObjectSpace._id2ref(b)
> c[1] = 7
> puts a                       => [1, 7, 3]

How about:

   a = b = c = [1,2,3]
   c[1] = 7
   p a                #  [1, 7, 3]

:-)


David

-- 
David A. Black
dblack@wobblini.net