defmacro added, doc improvements

stdlib/stdlib.lsp

@@ -60,6 +60,26 @@
 (defn tenth (l) (index l 9))
 (defn nth (i l) (index l (- i 1)))
 
+
+(defn list? (e) (= (type e) "list"))
+(defn empty-list? (e) (and (list? e) (= (len e) 0)))
+(defn string? (e) (= (type e) "string"))
+(defn int? (e) (= (type e) "int"))
+(defn float? (e) (= (type e) "float"))
+(defn nil? (e) (= (type e) "nil"))
+(defn true? (e) (= (type e) "#t"))
+(defn function? (e) (= (type e) "function"))
+
+
+(defmacro unless (test v)
+	(list 'if (list 'not test) v))
+
+(defmacro dotimes (v n body)
+	(list 'for v '(range 0 (eval n))
+		body
+    ))    
+
+
 ; return 1 when list contains item otherwise nil
 (defn member (lst itm) 
     (do
@@ -92,8 +112,6 @@
 (defn make-list (size)
     (make-list-of size nil))
 
-(defn empty-list? (lst) (and (= (type lst) "list") (= (len lst) 0)))
-
 (defn uniq (lst)
     (do
         (def rslt '())    
@@ -126,6 +144,12 @@
 	(if (> (len lst) n)
 		(map (lambda (i) (index lst i)) (range 0 n))
 		lst))
+
+(defn concat-lists (seq1 seq2)
+	(do	(def l seq1)
+		(dotimes i (len seq2) 
+			(set! l (push l (index seq2 i))))
+	))
     
 (defn quick-sort-by (l cmp)
     (if (<= (len l) 1)
@@ -253,5 +277,6 @@
         )
     ))
 
-; load and init do system
+
+; load and init doc system
 (include "/usr/local/var/mlisp/doc.lsp")