From: Brian Candler <b.candler@...>
Date: 2010-07-14T17:10:05+09:00
Subject: Re: Stdout as IO object

Jonathan Bale wrote:
> Okay, real simple question, but somehow I am missing it in the API: how
> do create an IO object that represents stdout? I'm using a certain
> function that receives writable IO objects and I wanted to pass in the
> standard output as a stream.

When your program starts, the constant STDOUT is an open file descriptor 
for STDOUT, and the global variable $stdout also points to it.

Using the global variable is the recommended approach, as it adds more 
flexibility for pointing it to a different object like a StringIO 
without having warnings about constants being redefined.
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