source: trunk/j/src/org/armedbear/lisp/adjoin.lisp @ 11297

Last change on this file since 11297 was 11297, checked in by ehuelsmann, 13 years ago

Set Id keyword for expansion.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.1 KB
Line 
1;;; adjoin.lisp
2;;;
3;;; Copyright (C) 2003 Peter Graves
4;;; $Id: adjoin.lisp 11297 2008-08-31 13:26:45Z ehuelsmann $
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(defun adjoin (item list &key key (test #'eql testp) (test-not nil notp))
21  (when (and testp notp)
22    (error "test and test-not both supplied"))
23  (if (let ((key-val (sys::apply-key key item)))
24  (if notp
25      (member key-val list :test-not test-not :key key)
26      (member key-val list :test test :key key)))
27      list
28      (cons item list)))
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