From: John Joyce <dangerwillrobinsondanger@...>
Date: 2008-02-14T01:46:42+09:00
Subject: Re: [RRR] Robert's Ruby Riddle: Local or Method


On Feb 13, 2008, at 9:38 AM, Robert Dober wrote:

> Hi list I was just thinking it might fun to present some of Ruby's
> features in form of a riddle.
> There was an interesting thread yesterday and as I always forget the
> basics I wrote some testcode to find out if the local or the method
> prevails, I made a stupid
> error and had to rewrite the code, or maybe did I not? This depends on
> the answer of the riddle.
> Todays Ruby Riddle is:
>
> Can the following code be used to test if the argument of puts is the
> local variable "a" or the method "a"? And if so please explain how.
>
> <code>
> a = 42
> def a; 42 end
> puts a
> </code>
> I leave some blank lines here so that people can reply without
> spoiling if for other readers.
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> -- 
> http://ruby-smalltalk.blogspot.com/
>
> ---
> Whereof one cannot speak, thereof one must be silent.
> Ludwig Wittgenstein
>
very simple
puts a
will out put the object a
in the scope you def'd the 'a' method
it belongs to either Object or IRB
to get the method's output you need to do
self.a