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From: John Kitchin <jkitchin@andrew.cmu.edu>
To: tomas@tuxteam.de
Cc: emacs-orgmode@gnu.org
Subject: Re: Get =#+RESULTS= without re-evaluating source code block?
Date: Wed, 27 Jan 2021 18:31:03 -0500	[thread overview]
Message-ID: <CAJ51ETpWnQrr6fVH26B5dMPU6ucw2M3Mn3pCWzERUCCXkwapiA@mail.gmail.com> (raw)
In-Reply-To: <20210127223821.GB14346@tuxteam.de>

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I tried this but it did not work for me.


On Wed, Jan 27, 2021 at 5:38 PM <tomas@tuxteam.de> wrote:

> On Wed, Jan 27, 2021 at 05:14:43PM -0500, doltes wrote:
> > Get =#+RESULTS= without re-evaluating source code block?
> >
> > Let's suppose I have a code block which requires a long time to finish
> >
> > #+NAME: big-computation
> > #+begin_src bash
> > sleep 5 # Some computation which requires a long time to complete.
> > echo a
> > #+end_src
> >
> > #+RESULTS: big-computation
> > #+begin_example
> > a
> > #+end_example
> >
> > I want to use the results of that code block in other code blocks so I
> > use a =noweb= reference (see below.)
> >
> > #+begin_src bash :noweb yes
> > printf "%s\n" <<big-computation()>>
> > #+end_src
> >
> > #+RESULTS:
> > #+begin_example
> > a
> >
> > #+end_example
> >
> > However, doing this (i.e. using a =noweb= reference) would make the
> > command to be evaluated whenever getting its results. I don't want
> > this, I want the =:noweb= reference to actually use the already
> > computed results.
> >
> > So, my question is: Is it possible to use the actual =#+RESULTS= code
> > block instead of always evaluating it when referencing the results
> > through a =:noweb= reference?
>
> Perhaps "Cache results of evaluation" (15.5 Evaluating Code Blocks,
> in the Interwebs here [1] is for you.
>
> In short, add a header argument :cache yes to your code block.
>
> Cheers
>
> [1] https://orgmode.org/org.html#Evaluating-Code-Blocks
>
>  - t
>
-- 
John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu

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  reply	other threads:[~2021-01-27 23:32 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-27 22:14 doltes
2021-01-27 22:38 ` tomas
2021-01-27 23:31   ` John Kitchin [this message]
2021-01-28  3:26     ` Greg Minshall
2021-02-02  2:10       ` John Kitchin
2021-02-02 20:02         ` Nick Dokos
2021-01-27 23:33   ` doltes

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