From: Florian Gilcher <flo@...>
Date: 2008-06-14T23:05:13+09:00
Subject: Re: fire event when the value of a variable is changed

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On Jun 14, 2008, at 3:07 PM, Mehdi Adda wrote:

> Tobias Weber wrote:
>> In article <d393d2832e1f94df7d765538b9973fe4@ruby-forum.com>,
>> Mehdi Adda <mehdi.adda@gmail.com> wrote:
>>
>>> I have told that if the value of the variable is changed via a  
>>> sitter,
>>> it's possible to use a method chaining. How if there is no setter ?
>>
>> What kind of variable? Global, local, instance? For the latter you  
>> could
>> write your own attr_accessor method that either creates a call to a
>> custom method or uses update() of Observer.
>
> Thanks for the answer ... if fact when it's an instance variable, it's
> possible to (re)define the setter... the problem is when the  
> variable is
> local.
>
>
> I checked the use of trace_var, and as Avdi said, it's only used to
> trace global variables assignments.
>
>
> Addame

Even if you change the setter, you won't be able to trace direct  
assignment.

Regards,
Florian Gilcher
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