X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Futils.lisp;h=d586cddf69dd01913e077e8d824d242e5fa1a2c0;hb=68cd2db6542fa3442d46b0331ecf8be8f86c09c2;hp=f6d812021cea3261fb6010a55c20c6c2e02a1d34;hpb=26af6f56fc615a008c3f433265ccecbfce815a61;p=jscl.git

diff --git a/src/utils.lisp b/src/utils.lisp
index f6d8120..d586cdd 100644
--- a/src/utils.lisp
+++ b/src/utils.lisp
@@ -29,18 +29,18 @@
       x
       (list x)))
 
-(defun !reduce (func list &key initial-value)
-  (if (null list)
-      initial-value
-      (!reduce func
-               (cdr list)
-               :initial-value (funcall func initial-value (car list)))))
+(defun !reduce (func list initial-value)
+  (let ((result initial-value))
+    (dolist (element list result)
+      (setq result (funcall func result element)))))
 
 ;;; Concatenate a list of strings, with a separator
 (defun join (list &optional (separator ""))
-  (!reduce (lambda (s o) (concat s separator o))  
-           (cdr list) 
-           :initial-value (car list))) 
+  (if (null list)
+      ""
+      (!reduce (lambda (s o) (concat s separator o))
+               (cdr list)
+               (car list))))
 
 (defun join-trailing (list &optional (separator ""))
   (if (null list)