source: trunk/j/src/org/armedbear/lisp/member-if.lisp @ 9266

Last change on this file since 9266 was 2729, checked in by piso, 18 years ago

(in-package "SYSTEM")

File size: 1.2 KB
Line 
1;;; member-if.lisp
2;;;
3;;; Copyright (C) 2003 Peter Graves
4;;; $Id: member-if.lisp,v 1.3 2003-07-02 18:35:00 piso Exp $
5;;;
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19
20(in-package "SYSTEM")
21
22(defun member-if (test list &key key)
23  (do ((list list (cdr list)))
24      ((endp list) nil)
25    (if (funcall test (apply-key key (car list)))
26  (return list))))
27
28(defun member-if-not (test list &key key)
29  (do ((list list (cdr list)))
30      ((endp list) ())
31    (if (not (funcall test (apply-key key (car list))))
32  (return list))))
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