{"type":"rich","categories":["sicp"],"blog_title":"trotr\u306e\u65e5\u8a18","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftrotr.hatenadiary.org%2Fentry%2F20080210%2F1202688495\" title=\"(sicp?)puts/gets\u3092\u5c11\u3057\u5909\u66f4 - trotr\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"trotr","version":"1.0","provider_name":"Hatena Blog","blog_url":"https://trotr.hatenadiary.org/","published":"2008-02-10 09:08:15","height":"190","provider_url":"https://hatena.blog","image_url":null,"width":"100%","author_url":"https://blog.hatena.ne.jp/trotr/","url":"https://trotr.hatenadiary.org/entry/20080210/1202688495","title":"(sicp?)puts/gets\u3092\u5c11\u3057\u5909\u66f4","description":"(put 'test '(test) \"test\") (get 'test '(test)) 0:user> *** ERROR: hash table doesn't have an entry for key (test) (put )\u306e\u304clist\u3060\u3068\u4e0a\u624b\u304f\u8a8d\u8b58\u3057\u3066\u304f\u308c\u306a\u3044\u307f\u305f\u3044\u3002 (car (hash-table-keys (hash-table-get parent-hash 'test))) 1:user> => (test) ;;eq?\u3067\u8a55\u4fa1\u3057\u3066\u3044\u308b\u304b\u3089\u304b\u3082\u3057\u308c\u306a\u3044\u3002 (eq? 'test 'test) (eq? '(test) '(test)) (equal? '(test) '\u2026"}