From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Fraga, Eric" <e.fraga@ucl.ac.uk>
Subject: Re: Inject value of macro into code using a variable
Date: Wed, 16 Oct 2019 06:23:48 +0000
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References: <C7438D69-71A9-4159-8690-4CE57ECD9F4B@mac.com>
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To: wlharvey4 via Emacs-orgmode <emacs-orgmode@gnu.org>
Cc: "wlharvey4@mac.com" <wlharvey4@mac.com>

On Tuesday, 15 Oct 2019 at 09:37, wlharvey4 via Emacs-orgmode wrote:
> Is it possible to inject the value of a macro into code using a variable?

I use properties for this, as in:

#+begin_src org
  ,#+property: version 2.0.5
  ,#+header: :var version=3D(esf/get-parameter "benzenefeed")
  [...]
  ,#+begin_src somelanguage
  [... code that uses version ...]
  ,#+end_src
#+end_src

where
#+begin_src emacs-lisp
  (defun esf/get-parameter (p)
    (let ((value (org-entry-get (point) p 'inherit)))
      (message "parameter %s value obtained %s" p value)
      (if value
          (if (string-match-p "^[-+ ]*[[:digit:].]+$" value)
              (string-to-number value)
            value)
        (error "Property parameter \"%s\" not known." p))))
#+end_src=20

--=20
Eric S Fraga via Emacs 27.0.50, Org release_9.2.6-552-g8c5a78