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From: <tomas@tuxteam.de>
To: emacs-orgmode@gnu.org
Subject: Re: Get =#+RESULTS= without re-evaluating source code block?
Date: Wed, 27 Jan 2021 23:38:21 +0100	[thread overview]
Message-ID: <20210127223821.GB14346@tuxteam.de> (raw)
In-Reply-To: <87czxq83ha.fsf@gmail.com>

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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

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  reply	other threads:[~2021-01-27 22:38 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 [this message]
2021-01-27 23:31   ` John Kitchin
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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