#
msgid ""
msgstr ""

msgid "title: Debit Reading Session - SICP solutions pt.1"
msgstr ""

msgid "date: 2021-06-08"
msgstr ""

msgid "layout: post"
msgstr ""

msgid "lang: en"
msgstr ""

msgid "ref: debit-reading-session-sicp-solutions-pt-1"
msgstr ""

msgid ""
";; 1.41\n"
"(define (double f)\n"
"  (lambda (x)\n"
"    (f (f x))))\n"
"\n"
"\n"
":;; 1.42\n"
"(define (compose f g)\n"
"  (lambda (x)\n"
"    (f (g x))))\n"
"\n"
"\n"
";;; 1.43\n"
"(define (repeated f n)\n"
"  (if (= 1 n)\n"
"    identity\n"
"    (comp (repeated f (dec n)))))\n"
"\n"
"\n"
";;; 2.27\n"
"(define (map-tree node-fn leaf-fn tree)\n"
"  (cond\n"
"   ((null? tree) tree)\n"
"   ((not (pair? tree)) (leaf-fn tree))\n"
"   (else\n"
"    (node-fn\n"
"     (cons (map-tree node-fn leaf-fn (car tree))\n"
"           (map-tree node-fn leaf-fn (cdr tree)))))))\n"
"\n"
"(define (map-nodes f tree)\n"
"  (map-tree f identity tree))\n"
"\n"
"(define (deep-reverse x)\n"
"  (map-nodes reverse x))\n"
"\n"
"\n"
";;; 2.28\n"
"(define (flatten tree)\n"
"  (define (rec acc t)\n"
"    (cond\n"
"     ((null? t) acc)\n"
"     ((not (pair? t)) (cons t acc))\n"
"     (else\n"
"      (rec (rec (cdr t) acc)\n"
"           (car t)))))\n"
"  (rec nil tree))\n"
"\n"
"\n"
";;; 2.30\n"
"(define (square-tree tree)\n"
"  (map-leaves square tree))\n"
"\n"
"\n"
";;; 2.31\n"
"(define square-tree map-leaves) ; ha!\n"
"\n"
"\n"
";;; 2.32\n"
"TODO\n"
msgstr ""

msgid "FYI: I just typed those in, I didn't yet test them yet."
msgstr ""