From: Love U Ruby <lists@...>
Date: 2013-03-18T14:43:41+09:00
Subject: Re: confusion with singleton method call

D. Deryl Downey wrote in post #1102022:

>
> Dude, if you're going to try complex stuff like this, use your friggin
> head. You keep attempting to do dumb ass stuff, but don't have a clue to
> what you're doing. You're not thinking, nor even attempting to reason it
> out. It didn't dawn on you that NUMBERS are different than their base
> class? What good would defining a singleton on the number 11 do?
> NOTHING!

I don't know how much you understand my above question,which is so 
valid.

From the doc: http://www.ruby-doc.org/core-2.0/Fixnum.html

Clearly mentioned that - ***There is effectively only one Fixnum object 
instance for any given integer value, so, for example, you cannot add a 
singleton method to a Fixnum.**

The same I agreed for Bignum,FLoat and Symbol.

Now the `true`,`false` and `nil` also has fixed Object_id, But why they 
are allowed to have singleton class on them. -- This is my curiosity to 
know and I think which is to legitimate.

Thanks.

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