From: Simon Strandgaard <0bz63fz3m1qt3001@...>
Date: 2003-05-10T09:03:20+09:00
Subject: Re: capture output

On Sat, 10 May 2003 08:45:26 +0900, Brian Candler wrote:

> Is this planned as part of "Embedding Ruby in C++ tutorial"? If so, I hope
> you don't mind if I argue that it doesn't belong there.

Yes I agree that this most likely will confuse newcomers.. Embedding ruby
into c/cpp is already a very difficult topic. 

Things should be made as intuitive as possible, so that Ruby can beat Python!
http://www.boost.org/libs/python/doc/index.html
python versus "tutorial-ruby-embedded-into-c++"
http://metaeditor.sf.net/embed/


ruby-in-a-sandbox: Im working on editor project where I "think" I need 
this feature (my knowledge about unix-TTYs is minimal).
One case where I think a sandbox definitly will be necessary with 
Ncurses and other TTY applications. Without a sandbox then rubys output
will clutter up the TTY. With a sandbox you can store rubys output in a
buffer.
Another case: many unix-applications is today being started from the
desktop, and no console output is visible. You will need to redirect 
rubys output to the applications status-box/log-window.

[snip  c++sandbox]
> code can. I cannot see any real-world application where such a sandbox is
> needed, because it probably just means that the logic is being done in the
> wrong place: if the Ruby part of your program needs to redirect any output
> it generates, or capture output of a child, then just do it in Ruby.

This last case is important if you want to do realworld applications :-)


> Just to be clear, I think writing up a tutorial on this embedding is a
> really worthwhile thing to do, and I applaud you for doing so. But I think
> it's important not to make it seem like this sort of sandboxing is
> necessary, because it makes embedding Ruby look far harder than it actually
> is, and might put people off. Material for an appendix perhaps.

True, Talk about ruby-sandbox should go in the Appendix.

Right now its located within the [Embedding Concepts] section
http://metaeditor.sourceforge.net/embed/#id2842584

When Im done with my in-depth studies of ruby-sandbox, I will rewrite this
sections.. and place it in the appendix. 

 
[snip pthreads]


Thanks for the good advices.
More advices is wanted so that we can beat Pythons tutorial :-)

--
Simon Strandgaard