{"author_url":"https://blog.hatena.ne.jp/tanakaBox/","categories":["Scheme"],"type":"rich","height":"190","url":"https://boxnos.hatenablog.com/entry/20080508/1210216219","author_name":"tanakaBox","version":"1.0","image_url":null,"description":"\u30e1\u30e2\u5316\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u304c\u6b32\u3057\u304f\u306a\u3063\u3066\u304d\u305f\u306e\u3067\u3001\u30e1\u30e2\u5316\u307e\u3067SICP\u8aad\u307f\u3002 \u554f\u984c 3.23 \u30c7\u30ad\u30e5\u30fc\u3092\u4f5c\u308c\u3002\u3068\u3044\u3046\u554f\u984c\u3002\u672b\u5c3e\u306edelete\u3092\u3059\u308b\u70ba\u306b\u306f\u3001\u30ad\u30e5\u30fc\u3092\u53cc\u65b9\u5411\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002 \u524d <- \u4eca -> \u5f8c\u3053\u3046\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u3001\u6700\u5f8c\u3092delete\u3059\u308b\u306e\u306bO(1)\u3092\u9054\u6210\u3067\u304d\u306a\u3044\u3002\u3061\u3068\u9762\u5012\u3002\u30c7\u30fc\u30bf\u69cb\u9020\u306f(list \u4eca \u524d \u5f8c)\u3068\u3057\u3066\u5b9f\u88c5\u3057\u3066\u3044\u304f\u3053\u3068\u306b\u3059\u308b\u3002 (define (make-deque) (let* ((front-ptr '()) (rear-ptr '()) (get-new-pair (lambda (v) (list v '() '()))) (set-before! (lambda \u2026","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20080508%2F1210216219\" title=\" SICP\u3092\u8aad\u3080(105) \u554f\u984c3.23 - \u30c7\u30ad\u30e5\u30fc - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://boxnos.hatenablog.com/","width":"100%","provider_url":"https://hatena.blog","blog_title":"\u30dc\u30af\u30ce\u30b9","published":"2008-05-08 12:10:19","title":" SICP\u3092\u8aad\u3080(105) \u554f\u984c3.23 - \u30c7\u30ad\u30e5\u30fc"}