{"blog_title":"Bye Bye Moore","url":"https://shuzo-kino.hateblo.jp/entry/2014/10/22/225800","provider_name":"Hatena Blog","categories":["ruby"],"provider_url":"https://hatena.blog","type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/shuzo_kino/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshuzo-kino.hateblo.jp%2Fentry%2F2014%2F10%2F22%2F225800\" title=\"Object#is_a?\uff08Object#kind_of?\uff09\u306e\u4f7f\u3044\u65b9 - Bye Bye Moore\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2014-10-22 22:58:00","description":"Object#is_a?\uff08\u307e\u305f\u306f#kind_of?\uff09\u306f\u30b5\u30d6\u30af\u30e9\u30b9\u3082\u542b\u3081\u305f\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304b\u5426\u304b\u3092\u5224\u5b9a\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u3082bool\u3067\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002\u4e8b\u524d\u306b\u3001\u3053\u3093\u306a\u95a2\u4fc2\u3067\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u3066\u304a\u304f\u3068\u30fb\u30fb\u30fb class A; end class B < A; end is_a?\u306e\u5834\u5408 A.new.is_a? B #=> false B.new.is_a? A #=> true \u53c2\u8003\u3082\u3068 - instance method Object#is_a?","author_name":"shuzo_kino","title":"Object#is_a?\uff08Object#kind_of?\uff09\u306e\u4f7f\u3044\u65b9","image_url":null,"version":"1.0","blog_url":"https://shuzo-kino.hateblo.jp/","height":"190"}