{"published":"2017-04-26 14:24:00","provider_url":"https://hatena.blog","blog_title":"kiyo_hiko\u306e\u30d6\u30ed\u30b0","height":"190","image_url":null,"width":"100%","blog_url":"https://kiyohikou.hateblo.jp/","author_url":"https://blog.hatena.ne.jp/kiyo_hiko/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkiyohikou.hateblo.jp%2Fentry%2F2017%2F04%2F26%2F142400\" title=\"Ruby\u3067\u30bc\u30ed\u57cb\u3081\u6587\u5b57\u5217 (printf %0s\u7684\u306a\u4f55\u304b) - kiyo_hiko\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"author_name":"kiyo_hiko","provider_name":"Hatena Blog","type":"rich","version":"1.0","title":"Ruby\u3067\u30bc\u30ed\u57cb\u3081\u6587\u5b57\u5217 (printf %0s\u7684\u306a\u4f55\u304b)","description":"\u306a\u3093\u3068\u306a\u304f\u5fc5\u8981\u306b\u306a\u3063\u3066\u66f8\u304d\u307e\u3057\u305f\u3002 def printf_0n(n, str) n <= str.length and return str \"#{1.upto(n - str.length).map{0}.join}#{s}\" end","url":"https://kiyohikou.hateblo.jp/entry/2017/04/26/142400"}