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the module system ?
From: |
David Pirotte |
Subject: |
the module system ? |
Date: |
Tue, 06 Mar 2001 11:43:54 +0100 |
Hi,
I am quite lost with respect to how the module system works. Here
is what I thought would be correct:
1] my module def and relative code:
-----------------------------------
(define-module (tactus db-stuff)
;; from distribution
:use-module (database postgres)
:use-module (ice-9 format)
;; from alto
)
(export ;; pg-con
open-db
close-db
;; get-db-con-str
)
(setenv "PGDATESTYLE" "German")
(define (open-db dbname user . options)
;; (format #t "dbname=~A user=~A options=~S~%" dbname user options)
(if (null? options)
(pg-connectdb (format #f "dbname=~A user=~A" dbname user))
(pg-connectdb (format #f "dbname=~A user=~A ~A" dbname user options)))
)
(define (close-db . con?)
(set! pg-con '())
(if (not (null? con?))
(eval `(set! ,(car con?) '()))))
2] when I try to use it:
------------------------
address@hidden:~/alto/projects/guile 58 $ guile
guile> (use-modules (tactus db-stuff))
guile> (open-db "tactus" "david")
/usr/alto/projects/guile/tactus/db-stuff.scm:26:7: In expression (pg-connectdb
(format #f "dbname=~A user=~A" ...)):
/usr/alto/projects/guile/tactus/db-stuff.scm:26:7: Unbound variable:
pg-connectdb
ABORT: (unbound-variable)
Type "(backtrace)" to get more information or "(debug)" to enter the debugger.
guile>
3] so, I hope we do not have to always have to know and load the modules
required
by the modules we want to use ...
What is it that I don't understand?
many thanks for some hints
David
- the module system ?,
David Pirotte <=
- Re: the module system ?, Martin Grabmueller, 2001/03/06
- Re: the module system ?, David Pirotte, 2001/03/06
- Re: the module system ?, Mikael Djurfeldt, 2001/03/06
- Re: the module system ?, David Pirotte, 2001/03/06
- Re: the module system ?, Ian Grant, 2001/03/07
- Re: the module system ?, Mikael Djurfeldt, 2001/03/07
- Guile-pg modules bug fix., Ian Grant, 2001/03/08
- Re: the module system ?, Ian Grant, 2001/03/08