From: uncutstone wu <uncutstone@...>
Date: 2006-05-18T11:03:10+09:00
Subject: Re: Capturing stdout

Mark Volkmann wrote:
> On 5/17/06, Eric Hodel <drbrain@segment7.net> wrote:
>> >
>>
>> No.  Using StringIO is more robust and more maintainable than using a
>> String with custom methods.  If I want to puts or print then I have
>> to add those methods.  If I just used StringIO I won't have to do
>> anything.
> 
> You don't have to add a puts method to the String object in order to
> have puts calls append to it. puts ends up calling write. I assume
> print does the same, but I'm not sure.

Yes, print does the same.
main.rb:
        strio = ""
	def strio.write(data)
	 	self << data
	end
	$stdout = strio
	load 'expansion.rb'
	$stdout = STDOUT
	puts "Get: #{strio}"
expansion.rb
        print "hello"
result:
        Get: hello


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