{"height":"190","categories":["lisp","ruby"],"url":"https://rubikitch.hatenadiary.org/entry/20070625/1321458863","blog_url":"https://rubikitch.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/rubikitch/","author_name":"rubikitch","title":"ldb\u306f\u30b7\u30d5\u30c8\u3068OR\u3067\u66f8\u3051\u308b\u306d","published":"2007-06-25 00:54:23","provider_url":"https://hatena.blog","width":"100%","version":"1.0","type":"rich","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubikitch.hatenadiary.org%2Fentry%2F20070625%2F1321458863\" title=\"ldb\u306f\u30b7\u30d5\u30c8\u3068OR\u3067\u66f8\u3051\u308b\u306d - http://rubikitch.com/\u306b\u79fb\u8ee2\u3057\u307e\u3057\u305f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"http://rubikitch.com/\u306b\u79fb\u8ee2\u3057\u307e\u3057\u305f","image_url":null,"description":"http://d.hatena.ne.jp/ytakenaka/20070624/p1\u56f3\u306e\u304a\u304b\u3052\u3067\u4e00\u767a\u3067\u7406\u89e3\u3067\u304d\u307e\u3057\u305f\u3002\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002 class Fixnum def b \"0b%03b\" % self end end 0b111 # => 7 0b001 # => 1 0b111001 # => 57 # (ldb (byte 3 3) var) (0b111001 >> 3).b # => \"0b111\" # (logior #b111000 #b001) (0b111 << 3 | 0b001).b # => \"0b111001\" # (progn (setf (ldb (by\u2026"}