From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Bug: :cache doesn't [9.1.14 (9.1.14-3-geb9955a-elpa @
 /home/charpent/.emacs.d/elpa/org-20180924/)]
Date: Mon, 22 Oct 2018 10:39:35 +0200
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In-Reply-To: <f74bd3b9e6a722fcdbee7278d1e7a3c8b1633783.camel@free.fr>
	(Emmanuel Charpentier's message of "Sun, 30 Sep 2018 08:44:55 +0200")
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To: Emmanuel Charpentier <emm.charpentier@free.fr>
Cc: emacs-orgmode@gnu.org

Hello,

Emmanuel Charpentier <emm.charpentier@free.fr> writes:

> But I stumble on a slight difficulty : I am unable to get org-mode to
> cache results.
>
> Minimal (non-)working example :
>
> 1) Org source :
>
> #+author:
> #+options: toc:nil
>
>
> #+name: toto
> #+BEGIN_SRC R :cache yes :eval no-expand
>   ## Simulate a (not too) long computation
>   Sys.sleep(3)
>   Sys.time()
> #+END_SRC
>
> #+RESULTS[6b7eeb22cb3d78d2af82298b4aef0eda5043bcee]: toto
> : 2018-09-30 08:01:23
>
> #+name: titi
> #+call: toto()

:cache is per source block. CALL keyword generates a new source block,
so it gets its own cache. So Org actually does cache results =E2=80=94 try,
e.g., to re-eval the first source block =E2=80=94 in a very basic way, and
you're mis-using the feature.

HTH,

--=20
Nicolas Goaziou