From: Shannon Fang <xrfang@...>
Date: 2002-12-07T07:18:23+09:00
Subject: Re: YA ++ explanation

The reason I am considering this is I try to understand how operator
overload work in ruby, could anyone tell me a list of all operators that
I can overload in ruby?

Tks...
Shannon

On Sat, 7 Dec 2002 07:12:27 +0900
Mauricio Fern~{an~}dez <batsman.geo@yahoo.com> wrote:

> On Sat, Dec 07, 2002 at 06:39:56AM +0900, Nat Pryce wrote:
> > From: "Shannon Fang" <xrfang@hotmail.com>
> > > Any comments? Since everything in ruby is object, += is a method of the
> > > object preceding it, why can't ++ like that?
> > 
> > The operator += is not a method in Ruby.   The parser treats += in a special
> > way.  Specifically, it treats:
> > 
> >     a += x
> > 
> > As an alias for:
> > 
> >     a = a + x
> > 
> > In that form, the + operator is a method call on the object refered to by
> > 'a' with the object refered to by 'b' as the parameter.  The '=' is an
> > assignment to a local variable 'a', and is handled in a special way by the
> > language.
> 
> I think he had 'succ!' in his mind.
> 
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