{"title":"aCb\u306e\u5024","image_url":null,"published":"2013-04-10 19:41:21","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcookies.hatenablog.jp%2Fentry%2F2013%2F04%2F10%2F194121\" title=\"aCb\u306e\u5024 - cookies.txt\u3000\u3000\u3000\u3000\u3000\u3000.scr\" 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":"cookie-s","blog_url":"https://cookies.hatenablog.jp/","width":"100%","version":"1.0","categories":["ruby","\u5099\u5fd8\u9332"],"type":"rich","author_url":"https://blog.hatena.ne.jp/cookie-s/","blog_title":"cookies.txt\u3000\u3000\u3000\u3000\u3000\u3000.scr","provider_url":"https://hatena.blog","description":"\u968e\u4e57\u3092\u3069\u3046\u306e\u3053\u3046\u306e\u3057\u3088\u3046\u304b\u3068\u601d\u3063\u305f\u3051\u3069\u3001\u5b9f\u969b\u3053\u308c\u3067\u5341\u5206\u3060\u3088\u306d\u3001\u3063\u3066\u8a71\u3002 def comb( a, b ) ([nil]*a).combination(b).size endArray#combination\u306e\u623b\u308a\u5024Enumerator\u3060\u3057\u5b89\u5fc3","url":"https://cookies.hatenablog.jp/entry/2013/04/10/194121","height":"190"}