Re: [O] Library of Babel confusion

Fri, 06 Apr 2018 17:00:55 -0700 

Aloha Lawrence,

#+name: myelsquare
#+header: :var x=0
#+begin_src emacs-lisp :var x=0
 (defun myelsquare (x)
   (* x x))
#+end_src

#+RESULTS: myelsquare
: myelsquare

Assuming myelsquare has been evaluated:

#+name: eval-myelsquare
#+header: :var y=2
#+BEGIN_SRC emacs-lisp
(myelsquare y)
#+END_SRC

#+RESULTS: eval-myelsquare
: 4

#+call: eval-myelsquare(3)

#+RESULTS:
: 9

hth,
Tom

Lawrence Bottorff writes:
I guess I need more information. For example, what is C-c C-v v doing exactly? Then C-x C-e? And M-x (symbol-function 'myelsquare) doesn't work. 
Again,

#+name: myelsquare
#+header: :var x=0
#+begin_src emacs-lisp :var x=0
  (defun myelsquare (x)
    (* x x))
#+end_src

is Lisp code where the last thing should be returned. From
library-of-babel.org:

#+name: json
#+begin_src emacs-lisp :var file='() :var url='()
  (require 'json)
  (cond
   (file
    (org-babel-with-temp-filebuffer file
      (goto-char (point-min))
      (json-read)))
   (url
    (require 'w3m)
    (with-temp-buffer
      (w3m-retrieve url)
      (goto-char (point-min))
      (json-read))))
#+end_src

And this calling a sample json-containing file gives

#+call: json(file="jsontest1")
| glossary | (title . example glossary) | (GlossDiv (title . S) (GlossList (GlossEntry (ID . SGML) (SortAs . SGML) (GlossTerm . Standard Generalized Markup Language) (Acronym . SGML) (Abbrev . ISO 8879:1986) (GlossDef (para . A meta-markup language, used to create markup languages such as DocBook.) 
(GlossSeeAlso . [GML XML])) (GlossSee . markup)))) |
which is correct, although not in list form. So again I'm looking at elisp code that is not in the form of a function. So I'm guessing "functions" cannot be #+call'ed, just "headless" elisp code. So what advantage does LOB 
offer?
On Tue, Apr 3, 2018 at 5:39 PM, Berry, Charles <ccbe...@ucsd.edu> wrote:
> On Apr 3, 2018, at 1:31 PM, Lawrence Bottorff > <borg...@gmail.com> wrote: 
>
> I've been trying to grok LOB again. So I've cloned the worg > git and library-of-babel.el is one of the files. org-babel-lob-injest didn't work, 


Try

M-x org-babel-lob-ingest RET org/worg/library-of-babel.org RET

Don't be a jester, be an ingester. ;-)


> so I customized org-babel-lob-files and inserted
.../worg/library-of-babel.el . . . and it did in fact get added to my 
init.el under the custom-set-variables:
>
> '(org-babel-lob-files (quote > ("~/org/worg/library-of-babel.org"))) 
>
> I checked org-babel-library-of-babel variable, and the new > things seemed to be there, although it's rather mind-bending to know I will be calling LOB code that is internally stored inside of an association list. 
>
> Now, in my org file I put this:
>
> #+lob: write(file="jsontest")


See (info"(org) Evaluating code blocks")

The proper idiom is

        #+call: write(file="jsontest")
Of course, there needs to be a proper 'write' src block in the file you 
ingested, etc.

>
> and try C-c C-c on it. Nothing. My minibuffer says "local > setup has been refreshed". How does one use, call a LOB function? Also, while I'm 
demonstrating my rank noobian-ness, I try this:
>
> #+name: myelsquare
> #+header: :var x=0
> #+begin_src emacs-lisp
>   (* x x)
> #+end_src
>
> #+call: myelsquare(x=6)
>
> #+RESULTS:
> : 36
>
> but this results in
>
> #+name: myelsquare
> #+header: :var x=0
> #+begin_src emacs-lisp
>   (defun myelsquare (x)
>       (* x x))
> #+end_src
>
> #+call: myelsquare(x=6)
>
> #+RESULTS:
> : myelsquare2
Is this *verbatim* ? Did you cut and paste everything (including the 
trailing `2') all at once? If so, I do not get it.

I would have expected

#+RESULTS:
: myelsquare

 which is the correct behavior.
To see why put point in the myelsquare src block and type C-c C-v v
then move point to the end of the 'preview' buffer and type C-x C-e. 

Look at the value echo-ed in the minibuffer.
If it still isn't clear maybe `M-x (symbol-function 'myelsquare)' will 
help.

HTH,

Chuck




--
Thomas S. Dye
http://www.tsdye.com

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