How do you use call and lob in org-babel?

From: Inquisitive Scientist <inquisitive.scientist@gmail.com>
To: emacs-orgmode@gnu.org
Subject: How do you use call and lob in org-babel?
Date: Thu, 5 Aug 2010 09:24:46 -0400	[thread overview]
Message-ID: <AANLkTik5iYxh_wKgLSMhhWM-brXQNq0d7JoJgCUcBRGz@mail.gmail.com> (raw)

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Dear Experts,

I am confused about how to use lob and call in org-babel. First I
define a simple function like square:
#+srcname: square(x)
#+begin_src python
return x*x
#+end_src

A line like
: #+lob: square(x=2)
does not seem to produce any result either in the buffer or on export:
#+lob: square(x=2)

The same seems to happen with call:
: #+call: square(x=2)
#+call: square(x=2)

Instead, to get things to work I need to do something like:
: | 4 |
: #+TBLFM: @1$1='(sbe "square" (x 2))
to get:
| 4 |
#+TBLFM: @1$1='(sbe "square" (x 2))

Thanks,
-I.S.

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