STDOUT to StringIO

ruby-talk
1

I know that I can redirect my standard output to a file like this:

STDOUT.reopen(File.open(filename,'w'))

But then, why can't I redirect it to a string like this? :

output = StringIO.open('','w')
STDOUT.reopen(output)

TypeError: can't convert StringIO into String

Can somebody see what I am doing wrong?

Thanks a lot!
Fredrik

2

I know that I can redirect my standard output to a file like this:

STDOUT.reopen(File.open(filename,'w'))

But then, why can't I redirect it to a string like this? :

output = StringIO.open('','w')
STDOUT.reopen(output)

TypeError: can't convert StringIO into String

Can somebody see what I am doing wrong?

>> $stderr = output
=> #<StringIO:0x404e8>
>> warn "blah"
=> nil
>> output.string
=> "blah\n"

···

On Nov 21, 2007, at 01:15 , Fredrik wrote:

3

Also:

http://blog.segment7.net/articles/2006/08/17/stdout-vs-stdout

···

On Nov 21, 2007, at 02:18 , Ryan Davis wrote:

On Nov 21, 2007, at 01:15 , Fredrik wrote:

I know that I can redirect my standard output to a file like this:

STDOUT.reopen(File.open(filename,'w'))

But then, why can't I redirect it to a string like this? :

output = StringIO.open('','w')
STDOUT.reopen(output)

TypeError: can't convert StringIO into String

Can somebody see what I am doing wrong?

>> $stderr = output
=> #<StringIO:0x404e8>
>> warn "blah"
=> nil
>> output.string
=> "blah\n"

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