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https://github.com/Gnucash/gnucash.git
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83d14e1c1c
It is split into - /libgnucash (for the non-gui bits) - /gnucash (for the gui) - /common (misc source files used by both) - /bindings (currently only holds python bindings) This is the first step in restructuring the code. It will need much more fine tuning later on.
62 lines
1.9 KiB
Scheme
62 lines
1.9 KiB
Scheme
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2 of
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;; the License, or (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; if not, contact:
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;;
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;; Free Software Foundation Voice: +1-617-542-5942
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;; 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
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;; Boston, MA 02110-1301, USA gnu@gnu.org
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(define (make-table-collector)
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(let ;;; variable slots
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((total 0) ;;; Numeric total
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(rows '()) ;;; Collection of items into total
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(count 0)) ;;; Number of elements
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(let
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((adder (lambda (amount pos)
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(set! total (+ total amount))
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(set! rows (cons pos rows))
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(set! count (+ count 1))))
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(gettotal (lambda () total))
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(getcount (lambda () count))
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(getrows (lambda () rows))
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(resetall (lambda ()
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(set! total 0)
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(set! rows '())
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(set! count 0))))
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(lambda (action value . rowdata)
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(case action
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((add) (adder value rowdata))
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((total) (gettotal))
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((getcount) (getcount))
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((getrows) (getrows))
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((reset) (resetall)))))))
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;;; Here's how it looks:
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; > (define a (make-table-collector))
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; > (a 'add 2)
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; > (a 'add 4 5 6)
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; > (a 'add 6 7 8)
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; > (a 'add 9 10)
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; > (a 'getcount #f)
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; 4
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; > (a 'total #f)
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; 21
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; > (a 'getrows #f)
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; ((10) (7 8) (5 6) ())
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; > (a 'reset #f)
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; > (list (a 'getcount #f) (a 'total #f) (a 'getrows #f))
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; (0 0 ())
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; >
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