tm 7.89.

[elisp/tm.git] / tl-list.el

diff --git a/tl-list.el b/tl-list.el
index 9bb08b1..4c2a538 100644 (file)
--- a/tl-list.el
+++ b/tl-list.el
@@ -1,5 +1,5 @@
 ;;;
-;;; $Id: tl-list.el,v 2.0 1994/11/08 11:14:20 morioka Exp $
+;;; $Id: tl-list.el,v 2.5 1994/12/27 01:49:41 morioka Exp $
 ;;;
 
 (provide 'tl-list)
@@ -33,6 +33,27 @@
           x))))
 
 
+(defun nth-prev (n ls)
+  "Return elements of LS until N - 1 th. [tl-list.el]"
+  (butlast ls (- (length ls) n))
+  )
+
+(defun except-nth (n ls)
+  "Return elements of LS except N th. [tl-list.el]"
+  (append (nth-prev n ls) (nthcdr (+ 1 n) ls))
+  )
+
+(defun last-element (ls)
+  "Return last element. [tl-list.el]"
+  (car (last ls))
+  )
+
+
+;;; @ set
+;;;
+(fset 'is-member 'member)
+
+
 ;;; @ alist
 ;;;
 
@@ -79,11 +100,30 @@ return new alist whose car is the new pair and cdr is <ALIST>.
 ;;;
 
 (defun fetch-field (key alist)
-  (assoc key alist)) 
+  (assoc key alist)
+  )
+
+(defun fetch-field-value (key alist)
+  (cdr (assoc key alist))
+  )
 
 (fset 'put-field 'put-alist)
 (fset 'delete-field 'del-alist)
 
+(defun put-fields (tp c)
+  (catch 'tag
+    (let ((r tp) f ret)
+      (while r
+       (setq f (car r))
+       (if (not (if (setq ret (fetch-field (car f) c))
+                    (equal (cdr ret)(cdr f))
+                  (setq c (cons f c))
+                  ))
+           (throw 'tag 'error))
+       (setq r (cdr r))
+       ))
+    c))
+
 
 ;;; @ field unifier
 ;;;