From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rainer M Krug Subject: Re: [babel] Conditional tangling possible Date: Tue, 31 Aug 2010 10:19:04 +0200 Message-ID: <4C7CBAF8.6050405@gmail.com> References: <4C7B9908.8090109@gmail.com> <87fwxv7iib.fsf@gmail.com> Reply-To: R.M.Krug@gmail.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from [140.186.70.92] (port=35910 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OqM3h-0002OW-99 for emacs-orgmode@gnu.org; Tue, 31 Aug 2010 04:19:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OqM3f-0001Y1-Su for emacs-orgmode@gnu.org; Tue, 31 Aug 2010 04:19:09 -0400 Received: from mail-wy0-f169.google.com ([74.125.82.169]:38464) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OqM3f-0001Xt-NW for emacs-orgmode@gnu.org; Tue, 31 Aug 2010 04:19:07 -0400 Received: by wyb36 with SMTP id 36so9245585wyb.0 for ; Tue, 31 Aug 2010 01:19:06 -0700 (PDT) In-Reply-To: <87fwxv7iib.fsf@gmail.com> List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: Eric Schulte Cc: emacs-orgmode -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 31/08/10 02:06, Eric Schulte wrote: > Hi Rainer, > > The easiest way to do this should be, > > --8<---------------cut here---------------start------------->8--- > ** pulling information from tags :blue: > > #+begin_src R :var color=(car (org-get-tags-at (point))) :tangle example.R > color > #+end_src OK - that looks good. That solves one problem. But it is not actually conditional tangling? It is rather the transation of a tag into a variable - or am I seeing something wrong? I must admit I have chosen a bad example. The idea is really to have two completely different definitions of a function, which is then tangled depending on a tag (or property or whatever else I could use to make this easy). so: - -8<---------------cut here---------------start------------->8--- ** Here is the conditional tangle :SIM1 #+begin_src R :TANGLE_ONLY_IF__IN_TAGs SIM1 :tangle example.R simulate <- function() { # do something result <- 15 return(result) } #+end_src #+begin_src R :TANGLE_ONLY_IF__IN_TAGs SIM2 :tangle example.R simulate <- function() { # do something else result <- -88 return(result) } #+end_src - --8<---------------cut here---------------end--------------->8--- So if SIM1 is in the tags, tangle the first block, if SIM2 is in tags then tangle the second block. As I said, I do not have to use tags, properties would also work. Cheers, Rainer > > #+results: > : blue > --8<---------------cut here---------------end--------------->8--- > > this will tangle to > > --8<---------------cut here---------------start------------->8--- > color <- "blue" > color > --8<---------------cut here---------------end--------------->8--- > > Cheers -- Eric > > Rainer M Krug writes: > >> Hi >> >> I would like to have two different versions (not in the sense of version >> control) of one program in one org file, and depending on the value if a >> tag is set or not, tangle either the one or the other. The tangled file >> has to have the same name. >> >> So essentially: >> >> >> >> ** Test Code :VERSIONTAG >> Version 1: >> #+begin_src R :tangle result.R >> version <- 1 >> x <- 10 >> #+end_src >> >> Version 2: >> #+begin_src R :tangle result.R >> version <- 2 >> x <- 13 >> #+end_src >> >> If VERSIONTAG is Version1, result.R should contain the code as in the >> first code block, and if it is Version2, the code from the second code >> block. >> >> >> Is this possible? >> >> Cheers, >> >> Rainer - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Natural Sciences Building Office Suite 2039 Stellenbosch University Main Campus, Merriman Avenue Stellenbosch South Africa Tel: +33 - (0)9 53 10 27 44 Cell: +27 - (0)8 39 47 90 42 Fax (SA): +27 - (0)8 65 16 27 82 Fax (D) : +49 - (0)3 21 21 25 22 44 Fax (FR): +33 - (0)9 58 10 27 44 email: Rainer@krugs.de Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkx8uvgACgkQoYgNqgF2egrL2QCePKP3mb6CKbjCVUk4l6zHWj0y rMIAniSj/OO5laX3xETB5s+RKborhwS4 =0pMO -----END PGP SIGNATURE-----