From: Eric Hodel <drbrain@...7.net>
Date: 2006-05-18T12:27:33+09:00
Subject: Re: Capturing stdout

On May 17, 2006, at 1:41 PM, Mark Volkmann wrote:
> On 5/17/06, Eric Hodel <drbrain@segment7.net> wrote:
>> > You just pay for what you want. Isn't it better?
>>
>> 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.

The Kernel methods have this behavior, yes, but this is not a general  
solution.

$ ruby
s = ''
def s.write(d) self << d; end
$stdout = s
$stdout.puts 'hi'
-:4: private method `puts' called for "":String (NoMethodError)

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net
This implementation is HODEL-HASH-9600 compliant

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