From: mengx@...
Date: 2002-01-03T02:28:25+09:00
Subject: [ruby-talk:30059] Re: A Bug or something else?

> 
> m> I assume it is "to_s", right?, If the ruby is writen in ruby,
> m> would it first evaluated as "#{a.to_s}" ? 
> 
>  it will evaluated
> 
>            "" + a + ""
> 
>  and it try to convert `a' to a String by calling #to_s
> 

So at least for "#{a}", Ruby interpreter directly calls "to_s" without
checking access permission.

class NilClass
	def to_s
		"ss"
	end

	private :to_s
end
"#{nil}"  -> "ss"
nil.to_s  -> "undefined"

What is opinion on the rationale of "nil" -> "" ?

Thanks

-Ted