Re: Generate new babel code blocks and/or initialized code/data?

[Lawrence Bottorff <borgauf@gmail.com>]

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If I evaluate this:

#+name: myfun1
#+begin_src clojure
(defn myfun1
  [ ]
  9)
#+end_src

#+RESULTS: myfun1
: #'clojure-noob.core/myfun1

then this

#+begin_src clojure
(inc (myfun1))
#+end_src

#+RESULTS:
: 10

I've got the right answer, but I've totally bypassed the :var
functionality. In my elisp example

#+begin_src emacs-lisp :var myx=(mylist1)
(mapcar '1+ myx)
#+end_src

#+RESULTS:
| 2 | 3 | 4 | 5 |

it seems to be as you say, i.e., the function needs to be evaluated, and,
yes, the mylist1 function in parens does the trick. But this

#+begin_src clojure :var i=(myfun1)
(inc i)
#+end_src

produces this in *Messages*:

eval: Symbol’s function definition is void: myfun1

However, this

#+name: myfun1-test2
#+begin_src clojure
(myfun1)
#+end_src

#+RESULTS: myfun1-test2
: 9

does finally get seen and evaluated:

#+begin_src clojure :var i=myfun1-test2
(inc i)
#+end_src

#+RESULTS:
: 10

But this adds an extra step just to use :var. I'm guessing regular Lisp and
maybe Scheme (geiser) know about var i=(myfun1), . Will test, but I've got
to swap out my .emacs.d first. As far as noweb is concerned, doing
<<myfun1>> doesn't win me anything, does it? It's the same as (myfun1)
above.










On Sat, Sep 24, 2016 at 8:03 PM, Thomas S. Dye <tsd@tsdye.com> wrote:

> Aloha Lawrence,
>
> I don't know the Clojure dialect, but I think the problem is that the
> myfun1 source code block returns a function.  It doesn't evaluate
> the function and return a result, which is I think what you are
> expecting.
>
> You can use noweb expansion of myfun1 to define the function inside
> another source code block, then use the function in the normal way in
> the source code block (or in the session, if you have that set).
>
> Or, you might change the myfun1 source code block to return a list,
> rather than a function (if I'm reading Clojure correctly):
>
> #+name: myfun1
> #+begin_source clojure
> [8 9]
> #+end_source
>
> hth,
> Tom
>
> Lawrence Bottorff writes:
>
> > Not sure if you know Clojure, but here's what I've been toying with:
> >
> > #+name: my-test
> > #+begin_src clojure :var i=[1 2]
> > (map inc i)
> > #+end_src
> >
> > #+RESULTS: my-test
> > | 2 | 3 |
> >
> > looks good, but then
> >
> > #+name: myfun1
> > #+begin_src clojure
> > (defn myfun1
> >   [ ]
> >   [8 9])
> > #+end_src
> >
> > #+begin_src clojure :var i=myfunc1
> > (map inc i)
> > #+end_src
> >
> > doesn't do anything, i.e., it doesn't process the myfunc1 and provide the
> > vector [8 9]
> >
> > This elisp code works, though:
> >
> > #+name: mylist1
> > #+begin_src emacs-lisp
> > (defun mylist1 ()
> >   (list 1 2 3 4))
> > #+end_src
> >
> > then
> >
> > #+begin_src emacs-lisp :var myx=(mylist1)
> > (mapcar '1+ myx)
> > #+end_src
> >
> > #+RESULTS:
> > | 2 | 3 | 4 | 5 |
> >
> > Note how I put mylist1 in parens. Without produced odd output
> >
> > #+RESULTS:
> > | 110 | 122 | 109 | 106 | 116 | 117 | 50 |
> >
> > . . . which is literally taking the ascii letters of the word "mylist1"
> and
> > incrementing them. (Too much fun. . . ). What might be wrong with my
> > Clojure attempt? I've tried (myfun1), myfun1, and myfun1() gives an
> error.
> >
> >
> >
> > On Tue, Sep 20, 2016 at 3:33 PM, Thomas S. Dye <tsd@tsdye.com> wrote:
> >
> >> Aloha Lawrence,
> >>
> >> Lawrence Bottorff writes:
> >>
> >> > So I can run code for a REPL-type language like Clojure in a babel
> code
> >> > block and get "results," e.g., a Clojure code block takes in a vector
> of
> >> > mappings and produces new "results":
> >> >
> >> > #+RESULTS[abc5c51bb569a82c19c4eea1c385c74e839922c7]:
> >> > symmetrize-body-parts-test
> >> > | :name | head            | :size |  3 |
> >> > | :name | left-eye        | :size |  1 |
> >> > | :name | right-eye       | :size |  1 |
> >> > | :name | left-ear        | :size |  1 |
> >> > . . .
> >> >
> >> > but could I generate results that aren't just static output listed
> after
> >> a
> >> > #+RESULTS tag, rather, embedded in a newly created babel code block?
> I'd
> >> > like such output "initialized" as far as the running REPL is concerned
> >> too.
> >> > Is it possible to generate new code/data that is immediately known to
> the
> >> > REPL session? Any examples don't have to be Clojure.
> >>
> >> You can use the :session header argument which will give you access to
> >> any variables created during the session:
> >>
> >> http://orgmode.org/worg/org-contrib/babel/languages/ob-
> >> doc-clojure.html#orgheadline13
> >>
> >> You can pass the function results to a variable argument, which makes
> >> possible chaining (see http://www.jstatsoft.org/v46/i03):
> >>
> >> #+header: :var x=myfunc(2)
> >>
> >> You can also embed and call a function in a source code block using
> noweb
> >> syntax:
> >>
> >> http://orgmode.org/worg/org-contrib/babel/intro.html#
> literate-programming
> >>
> >> hth,
> >> Tom
> >>
> >> --
> >> Thomas S. Dye
> >> http://www.tsdye.com
> >>
>
>
> --
> Thomas S. Dye
> http://www.tsdye.com
>

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