From 1d1a23e1247d4265590ae3df01b62fb69ba5cfac Mon Sep 17 00:00:00 2001 Message-Id: <1d1a23e1247d4265590ae3df01b62fb69ba5cfac.1716693855.git.mdw@distorted.org.uk> From: Mark Wooding Date: Tue, 22 Aug 2000 23:12:20 +0000 Subject: [PATCH] Added some utilities for assoc lists Organization: Straylight/Edgeware From: espen --- glib/gutils.lisp | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/glib/gutils.lisp b/glib/gutils.lisp index cc5c016..d38164c 100644 --- a/glib/gutils.lisp +++ b/glib/gutils.lisp @@ -15,7 +15,7 @@ ;; License along with this library; if not, write to the Free Software ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -;; $Id: gutils.lisp,v 1.1 2000-08-14 16:44:34 espen Exp $ +;; $Id: gutils.lisp,v 1.2 2000-08-22 23:12:20 espen Exp $ (in-package "KERNEL") @@ -83,3 +83,25 @@ (defun make-pointer (address) (defun null-pointer-p (pointer) (zerop (sap-int pointer))) + + +(defmacro when-bind ((var expr) &body body) + `(let ((,var ,expr)) + (when ,var + ,@body))) + + +(defmacro assoc-ref (key alist &key (test #'eq)) + `(cdr (assoc ,key ,alist :test ,test))) + + +(defmacro assoc-lref (key alist &key (test #'eq)) + `(cadr (assoc ,key ,alist :test ,test))) + + +(defun assoc-rem (key alist &key (test #'eq)) + (remove-if #'(lambda (element) (funcall test key (car element))) alist)) + + +(defun assoc-delete (key alist &key (test #'eq)) + (delete-if #'(lambda (element) (funcall test key (car element))) alist)) -- [mdw]