Re: [O] Modules, libraries, eggs, etc.

[John Kitchin]

It sounds like you should incorporate some tangling prior to running some blocks so that the external files would exist when required.

The only other approach is something like a :session. I don't know if that is setup for scheme/racket though.

John

-----------------------------------
Professor John Kitchin 
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803

@johnkitchin
http://kitchingroup.cheme.cmu.edu

On Tue, Sep 6, 2016 at 3:17 PM, Lawrence Bottorff <address@hidden> wrote:

Racket has a nice module system whereby a module is kept in a plain text .rkt file. For example,

#lang racket

(provide print-cake)

; draws a cake with n candles

(define (print-cake n)

  (show "   ~a   " n #\.)

  (show " .-~a-. " n #\|)

  (show " | ~a | " n #\space)

  (show "---~a---" n #\-))

 

(define (show fmt n ch)

  (printf fmt (make-string n ch))

  (newline))

is in cake.rkt so that

#+begin_src scheme :session ch2

(require "cake.rkt")

(print-cake (random 30))

#+end_src

produces the actual ascii -- albeit in the *Geiser dbg* buffer (or run from the associated REPL ch2):

; -*- geiser-scheme-implementation: racket -*-

(require "cake.rkt")

(print-cake (random 30))

=> #<void>

   .......................   

 .-|||||||||||||||||||||||-. 

 |                         | 

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So, this means I can do some Racket in org-mode, but the module side has to be outside. This seems not so elegant. Is there a babel language where the entire ecosystem is inside Emacs/org-mode? I'd like to have the module paradigm and have it all inside Emacs/org-mode.

LB