From: Robert Klemme <bob.news@...>
Date: 2003-02-03T18:53:31+09:00
Subject: Re: Local variables & blocks


"Yukihiro Matsumoto" <matz@ruby-lang.org> schrieb im Newsbeitrag
news:1044263814.840935.970.nullmailer@picachu.netlab.jp...
> Hi,
>
> In message "Re: Local variables & blocks"
>     on 03/02/03, "Robert Klemme" <bob.news@gmx.net> writes:
>
> |I just wonder what the second invocation of blocktest() will print.
Since
> |there is no iteration, no assignment to 'foo' will have taken place. Is
> |this an error or will 'foo' be initialized with 'nil'?  I guess 'nil'
> |initialization will be more reasonable because it saves an additional
test.
>
> nil.  Right again. ;-)

Great! :-)

So the only drawback I can see is that we have to take care that we don't
accidentally clutter the enclosing scope with huge temporary data like in:

def test()
  Proc.new do |arg|
    tmp = makeHugeTemp()
  end
end

But I think this is a rather unlikely case: if the operation is so complex
that it needs such amounts of temp data it will be put into a method
anyway.

Regards

    robert