{"published":"2014-03-28 15:38:43","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubytips86.hatenablog.com%2Fentry%2F2014%2F03%2F28%2F153843\" title=\"\u6570\u5024\u3092\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u6574\u5f62\u3059\u308b - Ruby Tips!\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://rubytips86.hatenablog.com/","url":"https://rubytips86.hatenablog.com/entry/2014/03/28/153843","author_url":"https://blog.hatena.ne.jp/rubytips86/","type":"rich","categories":[],"provider_name":"Hatena Blog","version":"1.0","provider_url":"https://hatena.blog","author_name":"rubytips86","image_url":null,"title":"\u6570\u5024\u3092\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u6574\u5f62\u3059\u308b","blog_title":"Ruby Tips!","description":"\u6570\u5024\u30923\u6841\u305a\u3064\u30ab\u30f3\u30de\u3067\u533a\u5207\u3063\u3066\u6574\u5f62\u3059\u308b\u306b\u306f\u3001\u6570\u5024\u3092\u3044\u3063\u305f\u3093\u6587\u5b57\u5217\u306b\u5909\u63db\u3057\u305f\u4e0a\u3067\u3001String#gsub\u3067\u6b63\u898f\u8868\u73fe\u306b\u3088\u308b\u7f6e\u63db\u3092\u884c\u3048\u3070\u826f\u3044\u3002\u4ee5\u4e0b\u306f\u3053\u306e\u65b9\u6cd5\u3067\u6570\u5024\u3092\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u6574\u5f62\u3059\u308b\u4f8b\u3067\u3042\u308b\u3002 num = 1234567890 p num.to_s.gsub(/(\\d)(?=\\d{3}+$)/, '\\\\1,') #=> \"1,234,567,890\" \u3053\u306e(\\d)(?=\\d{3}+$)\u3068\u3044\u3046\u5c11\u3057\u8907\u96d1\u306a\u6b63\u898f\u8868\u73fe\u306f\u3001\u672b\u5c3e\u304b\u30893n + 1\u756a\u76ee\u306e\u6570\u50241\u6841\u306b\u30de\u30c3\u30c1\u3059\u308b\u3082\u306e\u3060\u3002\u672b\u5c3e\u304b\u30893n + 1\u756a\u76ee\u306e\u6570\u5024\u3060\u3051\u306b\u30de\u30c3\u30c1\u3055\u305b\u308b\u305f\u3081\u3001\u307e\u305a3n\u500b\u306e\u6570\u5024\u3092(?=\\d{3}+$)\u3068\u3044\u3046\u80af\u5b9a\u5148\u8aad\u307f\u3067\u51e6\u7406\u3057\u3066\u3044\u308b\u3002","width":"100%"}