From: Robert Klemme <bob.news@...>
Date: 2003-11-20T21:37:15+09:00
Subject: Re: retry does not work


"T. Onoma" <transami@runbox.com> schrieb im Newsbeitrag
news:E1AMmpA-000682-J5@odie.runbox.com...
> >  You are raising an exception, this is, for me, different than sending
> >  message to stdout
>
> okay, i grant you that was not the intention of raise when designed. but
a rose by any other name....
>
> so what other means are there? should a raise_message be added? or maybe
you are right. maybe my library is "badly designed", but if so then tell
me what would the alternative be that achieves such seperation?

class Downloader
  attr_accessor :state_reporter

  def dowload(url)
    read_bytes = 0

    #  open conn

    while( chunk = io.read( 1024 ) )
      read_bytes += chunk.length
      # write bytes to file
      self.state_reporter && self.state_reporter.call(url, read_bytes)
    end
  end
end

d = Downloader.new
d.state_reporter = proc {|url, bytes| puts "read #{bytes} from #{url}"

d.download 'http://foo/bar'

You get the picture...

    robert