From: "David A. Black" <dblack@...>
Date: 2008-05-02T03:10:53+09:00
Subject: Re: References in Ruby

Hi --

On Fri, 2 May 2008, Stephen Cox wrote:

> David A. Black wrote:
>> Hi --
>>
>> On Thu, 1 May 2008, marc wrote:
>>
>>>> Why?? Since everything is a reference in Ruby I expected "puts 50".
>>>
>>> The way I think of it is that 10 and 50 are objects.
>>
>> And indeed they are :-)
>>
>>
>> David
>
> Wait, I'm a noob. And I see it this way:
>
> a = 10
> b = a  # b is NOW 10
> a = 50 # what's that got to do with B? B has already been assigned.
>
> I know I'm came to the same answer, but am I thinking this through the
> right way?

Yes, I think you are. 10 and 50 are objects (of class Fixnum). The
changing of the binding of a from 10 to 50 has no effect on the
binding of b to 10.


David

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