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From: arne@arne-koehn.de (Arne =?utf-8?Q?K=C3=B6hn?=)
Subject: Re: babel: is it possible to cache #+call executed blocks
Date: Fri, 03 Aug 2012 18:04:19 +0200
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In-Reply-To: <87hatv4i9w.fsf@online.de> ("Jonas
	\=\?utf-8\?Q\?H\=C3\=B6rsch\=22's\?\= message of "Thu, 28
	Jun 2012 16:34:35 +0200")
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coroa@online.de (Jonas H=C3=B6rsch) writes:

> i'm looking for a possibilty to call lengthy codeblocks a few times with
> different parameters, but would like the results to be cached.

It's probably a bit late, but I stumbled over the same problem. Here is
how I dealt with it (it's not that pretty).

Instead of

,----
|  #+call foofunc(bar=3Dbaz)
`----

I wrote a emacs-lisp block doing the same:

,----
| #+name: speak_world
| #+begin_src emacs-lisp :cache yes
|   (save-excursion
|     (goto-char (org-babel-find-named-block "speak"))
|     (org-babel-execute-src-block nil nil '((:var "say=3Dworld")))
|   )
| #+end_src
`----

In contrast to #+call, this results in a cached result for foo_bar that
can be accessed later on.

The disadvantages:
 - the cached result will never be invalidated (since foo_bar doesn't
   change)
 - somehow the variable bar will not be "baz" but "baz=3D", I changed my
   code block to strip the trailing "=3D".

If someone could point out where this "=3D" comes from: please tell me!


Arne