{"provider_url":"https://hatena.blog","height":"190","version":"1.0","published":"2017-08-24 09:10:53","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsecret-garden.hatenablog.com%2Fentry%2F2017%2F08%2F24%2F091053\" title=\"Ruby \u3067\u4efb\u610f\u306e\u30af\u30e9\u30b9\u304c\u7279\u7570\u30af\u30e9\u30b9\u304b\u3069\u3046\u304b\u5224\u5b9a\u3059\u308b - Secret Garden(Instrumental)\" 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":"osyo-manga","width":"100%","title":"Ruby \u3067\u4efb\u610f\u306e\u30af\u30e9\u30b9\u304c\u7279\u7570\u30af\u30e9\u30b9\u304b\u3069\u3046\u304b\u5224\u5b9a\u3059\u308b","categories":["Ruby"],"url":"https://secret-garden.hatenablog.com/entry/2017/08/24/091053","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/osyo-manga/","description":"Ruby \u3067\u4efb\u610f\u306e\u30af\u30e9\u30b9\u304c\u7279\u7570\u30af\u30e9\u30b9\u304b\u5224\u5b9a\u3057\u306a\u30fc\u3068\u601d\u3063\u3066\u3042\u308c\u3053\u308c\u8003\u3048\u3066\u3044\u305f\u3093\u3067\u3059\u304c\u3001\u305d\u3082\u305d\u3082 Module#singleton_class? \u304c\u3059\u3067\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3057\u305f\u3002 class X end p X.singleton_class? # => false p X.singleton_class.singleton_class? # => true p X.new.singleton_class.singleton_class? # => true p Class.new.singleton_class? # => false p Class.new.new.singleton_class.s\u2026","blog_url":"https://secret-garden.hatenablog.com/","type":"rich","blog_title":"Secret Garden(Instrumental)"}