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o-b-worg.org: changes to function arguments section

This commit is contained in:
Dan Davison 2009-09-04 20:19:24 -04:00
parent b239624e83
commit f5abc5155a
1 changed files with 39 additions and 6 deletions
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@ -246,9 +246,42 @@ it in our output.
:END:
In addition to evaluation of code blocks, org-babel allows them to
be parameterised (i.e. have arguments). Thus source code blocks
now have the status of *functions*.
now have the status of *functions*. Arguments to code blocks can
be used in both functional and scripting mode.
Inputs for fibonacci-seq
**** Simple example of using a source block as a function
First let's look at a very simple example. The following source
block defines an org-babel function that will square its input.
#+srcname: square(x)
#+begin_src python
x*x
#+end_src
In the org-mode file that looks like this:
: #+srcname: square(x)
: #+begin_src python
: x*x
: #+end_src
Now we use the source block:
: #+lob: square(x=6)
#+lob: square(x=6)
#+resname: square(x=6)
: 36
**** A more complex example: using an org-table as input
In this example we're going to define a function to compute a
Fibonacci sequence, and we're going to make it take its input
from a table in the org-mode buffer.
Here are the inputs for fibonacci-seq:
#+tblname: fibonacci-inputs
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
@ -260,8 +293,8 @@ in the Org-mode buffer this looks like
: | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
[[http://www.gnu.org/software/emacs/manual/elisp.html][Emacs Lisp]] source code
#+srcname: fibonacci-seq
#+begin_src emacs-lisp :var fib-inputs=fibonacci-inputs
#+srcname: fibonacci-seq(fib-inputs=fibonacci-inputs)
#+begin_src emacs-lisp
(defun fibonacci (n)
(if (or (= n 0) (= n 1))
n
@ -272,8 +305,8 @@ in the Org-mode buffer this looks like
#+end_src
in the Org-mode buffer this looks like
: #+srcname: fibonacci-seq
: #+begin_src emacs-lisp :var fib-inputs=fibonacci-inputs
: #+srcname: fibonacci-seq(fib-inputs=fibonacci-inputs)
: #+begin_src emacs-lisp
: (defun fibonacci (n)
: (if (or (= n 0) (= n 1))
: n