2 files changed, 0 insertions, 68 deletions
diff --git a/advent-of-code/lib/obj.rkt b/advent-of-code/lib/obj.rkt
deleted file mode 100644
index 8ffc401..0000000
--- a/advent-of-code/lib/obj.rkt
+++ /dev/null
@@ -1,32 +0,0 @@
-#lang racket
-
-(provide obj-maker
-         obj-set
-         obj-show)
-
-(define (alist->obj alist)
-  (λ key
-    (if (null? key)
-        alist
-        (cadr (assoc (car key) alist)))))
-
-(define (obj-maker . fields)
-  (λ inits
-    (define alist (map list fields inits))
-    (alist->obj alist)))
-
-(define (obj-set record key value)
-  (define alist (record))
-  (define new-alist
-    (let loop ((new-list '()) (cur alist) (is-set #f))
-      (if (null? cur)
-          (if is-set
-              new-list
-              (cons (list key value) new-list))
-          (let ()
-            (if (eq? key (caar cur))
-                (loop (cons (list key value) new-list) (cdr cur) #t)
-                (loop (cons (car cur) new-list) (cdr cur) is-set))))))
-  (alist->obj new-alist))
-
-(define (obj-show x) (x))
-\ No newline at end of file
diff --git a/advent-of-code/lib/utils.rkt b/advent-of-code/lib/utils.rkt
deleted file mode 100644
index 2ce8a51..0000000
--- a/advent-of-code/lib/utils.rkt
+++ /dev/null
@@ -1,36 +0,0 @@
-#lang racket
-
-(provide get-lines
-         enumerate
-         repeat
-         split-list-by)
-
-(define (repeat n e)
-  (let loop ((i 0) (ret '()))
-    (if (>= i n)
-        ret
-        (loop (+ 1 i) (cons e ret)))))
-
-(define (get-lines fp)
-  (let loop ((lines '()))
-    (define l (read-line fp))
-    (if (eof-object? l)
-        (reverse lines)
-        (loop (cons l lines)))))
-
-(define (enumerate lst)
-  (let loop ((i 1) (ret '()) (remain lst))
-    (if (null? remain)
-        (reverse ret)
-        (loop (+ 1 i) (cons (list (car remain) i) ret) (cdr remain)))))
-
-(define (split-list-by e lst . eq)
-  (define cmp (if (null? eq) equal? eq))
-  (let loop ((ret '())
-             (cur '())
-             (lst lst))
-    (if (null? lst)
-        (reverse (cons (reverse cur) ret))
-        (if (cmp e (car lst))
-            (loop (cons (reverse cur) ret) '() (cdr lst))
-            (loop ret (cons (car lst) cur) (cdr lst))))))