Re: [O] :session question

[Andreas Röhler]

Am 27.03.2013 12:48, schrieb Nick Dokos:
> Andreas Röhler <address@hidden> wrote:
>
> > Am 27.03.2013 10:27, schrieb Andreas Leha:
> > > Andreas Röhler <address@hidden> writes:
> > >
> > > > Am 26.03.2013 16:31, schrieb Eric Schulte:
> > > > > Achim Gratz <address@hidden> writes:
> > > > >
> > > > > > Am 26.03.2013 13:37, schrieb Eric Schulte:
> > > > > > > This can be done system wide by setting the language-specific header
> > > > > > > arguments.
> > > > > >
> > > > > > I've yet to see an example on how to do this.
> > > > >
> > > > >        #+begin_src emacs-lisp
> > > > >          (setq org-babel-default-header-args:R
> > > > >                '((:session . "org-R")))
> > > > >        #+end_src
> > > > >
> > > > >        #+RESULTS:
> > > > >        | (:session . org-R) |
> > > > >
> > > > >        #+begin_src R
> > > > >        x <- 1
> > > > >        x
> > > > >        #+end_src
> > > > >
> > > > >        #+RESULTS:
> > > > >        : 1
> > > > >
> > > > >        #+begin_src R
> > > > >        x
> > > > >        #+end_src
> > > > >
> > > > >        #+RESULTS:
> > > > >        : 1
> > > > >
> > > > > >
> > > >
> > > > Hi,
> > > >
> > > > this looks very confusing for me.
> > > >
> > > > So, what is the purpose of a named session?
> > > > Understood it being a name-space, whose values don't affect the other ones.
> > > > What's in python-mode a dedicated shell.
> > >
> > > I can't speak for python, but in R, every differently named session will
> > > run within its own R process.
> > >
> > > The cool thing is, that I can work on file_foo.org and file_bar.org
> > > simultaneously, when file_foo.org uses R-session *foo* and file_bar.org
> > > uses R-session *bar*.
> > >
> > > [...]
> > >
> > > Regards,
> > > Andreas
> >
> >
> > Okay, that's the expected usage.
> > How do you read the example displayed?
> >
> > Looks like a named (:session . "org-R") affects global R namespace.
> >
> > What did "org-R" say here, what might be the purpose?
> >
> > Assume it should switch it on. Then "org-R" represents a boolean here?
>
> "org-R" is the name of the session. The code blocks illustrate that the
> value of x (set in the first code block) is preserved and can be used
> in the second (and subsequent) code blocks.
>
> Nick

Okay, so the :session argument must not be repeated?

i.e. doesn't look like a session, resp. not a named session

>>>>> #+begin_src R
>>>>>        x <- 1
>>>>>        x
>>>>> #+end_src


Once a named session "org-R" is started all non-sessioned source goes there?
Looks like a broken namespace.