From: "E. Saynatkari" <none@...>
Date: 2006-02-24T07:25:02+09:00
Subject: Re: Private methods and self:

James Byrne wrote:
> 
> FOR ruby 1.8.4 (2005-12-24) [i386-linux]:
> 
> #--------------------------------------------------------------------------
> def foo1
>   self.bar
> end
> 
> def foo2
>   bar
> end
> 
> def bar
>   puts "In bar"
> end
> 
> private :bar
> 
> if __FILE__ == $0
> 
> foo2  -> 'In bar'
> foo1  -> 'NoMethodError: private method `bar' called for main:Object'
> 
> #--------------------------------------------------------------------------
> 
> Why the difference in treatment between the explict self reciever and 
> the implict self receiver?

Private methods are not allowed to have an explicit receiver
(using the 'self' there is like going out of the object and
then sending the message). The only exception to this rule
are writer methods (def foo=(); ...; end) because without
the self., foo = x is always interpreted as an assignment
to a local variable.

> Regards,
> Jim


E

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