1 ;;;; List functions not provided in R5RS or srfi-1
3 ;;; Copyright (C) 2003, 2006 Free Software Foundation, Inc.
5 ;;;; This library is free software; you can redistribute it and/or
6 ;;;; modify it under the terms of the GNU Lesser General Public
7 ;;;; License as published by the Free Software Foundation; either
8 ;;;; version 3 of the License, or (at your option) any later version.
10 ;;;; This library is distributed in the hope that it will be useful,
11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 ;;;; Lesser General Public License for more details.
15 ;;;; You should have received a copy of the GNU Lesser General Public
16 ;;;; License along with this library; if not, write to the Free Software
17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 (define-module (ice-9 list)
20 :export (rassoc rassv rassq))
22 (define (generic-rassoc key alist =)
23 (let loop ((ls alist))
29 (define (rassoc key alist . =)
30 (generic-rassoc key alist (if (null? =) equal? (car =))))
32 (define (rassv key alist)
33 (generic-rassoc key alist eqv?))
35 (define (rassq key alist)
36 (generic-rassoc key alist eq?))