From: Robert Gleeson <rob@...>
Date: 2009-12-12T13:29:57+09:00
Subject: Re: Redirecting standard output

Robert Klemme wrote:
> On 12/11/2009 05:30 PM, Robert Gleeson wrote:
>> 
>> So what gives?
> 
> I suggest you look again at my earlier posting (the one with the "date"
> example) and / or look at the documentation.  There *is* a difference
> between reassigning and using #reopen - and it is significant.
> 
> Cheers
> 
>   robert

Yup, I've acknowledged the difference myself in all my previous posts.
I just couldn't understand your second argument, but I think I know what 
you mean from playing around in IRB.

Reassignment will create a new object.. so

  # $stdout references a new object - foo references old.
  foo = $stdout
  $stdout = File.open 'foo', 'w'


  # $stdout.reopen will keep the same object identity..
  # So all previous references will persist.
  foo = $stdout
  $stdout.reopen 'foo', 'w'

Understood now. I can sleep.

- Rob


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