From: Robert Klemme <bob.news@...>
Date: 2003-02-05T17:46:37+09:00
Subject: Re: Local variables & blocks


<nobu.nokada@softhome.net> schrieb im Newsbeitrag
news:200302042128.h14LSKH02451@sharui.nakada.kanuma.tochigi.jp...
> Hi,
>
> At Wed, 5 Feb 2003 00:13:39 +0900,
> Robert Klemme wrote:
> > The proposed new rule is that a variable introduced in a block (other
than
> > the block parameters) is not local to the block but the enclosing
scope.
> > So in effect you can do then:
> >
> > def summer(*args)
> >   args.each { |arg| sum += arg.to_i }
> >   sum
> > end
>
> nil doesn't have method `+'.

Darn!  You're right.

> > Today you have to write
> >
> > def summer(*args)
> >   sum = 0
> >   args.each { |arg| sum += arg.to_i }
> >   sum
> > end
>
> You will have to write as above under the new rule.

Alternatively:

def andy_summers(*args)
  args.each { |arg| sum = sum.to_i + arg.to_i }
  sum
end

:-)

Regards

    robert