-;;; alist.el --- utility functions about assoc-list
+;;; alist.el --- utility functions about association-list
-;; Copyright (C) 1993,1994,1995,1996 Free Software Foundation, Inc.
+;; Copyright (C) 1993,1994,1995,1996,1998 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Version:
-;; $Id: alist.el,v 0.0 1997/02/28 02:18:23 tmorioka Exp $
;; Keywords: alist
-;; This file is part of SEMI (SEMI is Emacs MIME Interfaces).
+;; This file is part of APEL (A Portable Emacs Library).
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
-;;; Code:
-
+\f
+;;;###autoload
+(defun vassoc (key valist)
+ "Search VALIST for a vector whose first element is equal to KEY.
+See also `assoc'."
+ ;; by Stig@hackvan.com
+ (let (el)
+ (catch 'done
+ (while (setq el (pop valist))
+ (and (equal key (aref el 0))
+ (throw 'done el))))))
+\f
+
+;;;###autoload
(defun put-alist (item value alist)
"Modify ALIST to set VALUE to ITEM.
If there is a pair whose car is ITEM, replace its cdr by VALUE.
(cons (cons item value) alist)
)))
+;;;###autoload
(defun del-alist (item alist)
"If there is a pair whose key is ITEM, delete it from ALIST.
\[tomo's ELIS emulating function]"
)
alist))))
+;;;###autoload
(defun set-alist (symbol item value)
"Modify a alist indicated by SYMBOL to set VALUE to ITEM."
(or (boundp symbol)
(set symbol (put-alist item value (symbol-value symbol)))
)
+;;;###autoload
(defun remove-alist (symbol item)
"Remove ITEM from the alist indicated by SYMBOL."
(and (boundp symbol)
(set symbol (del-alist item (symbol-value symbol)))
))
+;;;###autoload
(defun modify-alist (modifier default)
"Modify alist DEFAULT into alist MODIFIER."
(mapcar (function
modifier)
default)
+;;;###autoload
(defun set-modified-alist (sym modifier)
"Modify a value of a symbol SYM into alist MODIFIER.
The symbol SYM should be alist. If it is not bound,