1 files changed, 0 insertions, 42 deletions
diff --git a/lore/sicp/set.scm b/lore/sicp/set.scm
deleted file mode 100644
index 3d60c5c..0000000
--- a/lore/sicp/set.scm
+++ /dev/null
@@ -1,42 +0,0 @@
-;; A set module, based on binary trees (from sicp)
-
-(define (entry tree) (car tree))
-(define (left-branch tree) (cadr tree))
-(define (right-branch tree) (caddr tree))
-
-(define (make-tree entry left right)
-  (list entry left right))
-
-(define (element-of-set? x set)
-  (cond ((null? set) #f)
-        ((= x (entry set)) #t)
-        ((< x (entry set))
-         (element-of-set? x (left-branch set)))
-        ((> x (entry set))
-         (element-of-set? x (right-branch set)))))
-
-(define (adjoin-set x set)
-  (cond ((null? set) (make-tree x '() '()))
-        ((= x (entry set)) set)
-        ((< x (entry set))
-         (make-tree (entry set)
-                    (adjoin-set x (left-branch set))
-                    (right-branch set)))
-        ((> x (entry set))
-         (make-tree (entry set)
-                    (left-branch set)
-                    (adjoin-set x (right-branch set))))))
-
-(define (intersection-set set1 set2)
-  (if (or (null? set1) (null? set2))
-    '()
-    (let ((x1 (car set1))
-          (x2 (car set2)))
-      (cond ((= x1 x2)
-             (cons x1
-                   (intersection-set (cdr set1)
-                                     (cdr set2))))
-            ((< x1 x2)
-             (intersection-set (cdr set1) set2))
-            ((< x2 x1)
-             (intersection-set set1 (cdr set2)))))))