{"url":"https://obelisk.hatenablog.com/entry/2018/03/25/233208","author_name":"obelisk2","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/obelisk2/","width":"100%","categories":["Ruby","\u304b\u3093\u305f\u3093\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0"],"version":"1.0","blog_url":"https://obelisk.hatenablog.com/","blog_title":"Camera Obscura","title":"Ruby \u3067\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u51fa\u529b\u3057\u3066\u307f\u305f","published":"2018-03-25 23:32:08","description":"\u7279\u5b9a\u306e\u5e74\u3068\u6708\u3092\u6307\u5b9a\u3057\u3066\u3001\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u51fa\u529b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002\u6a19\u6e96\u6dfb\u4ed8\u30e9\u30a4\u30d6\u30e9\u30ea\u306e Date \u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u306f\u3064\u307e\u3089\u306a\u3044\u306e\u3067\u3001\u81ea\u529b\u3067\u8a08\u7b97\u3057\u307e\u3057\u305f\u3002 calender.rb month_table = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] #\u3046\u308b\u3046\u5e74\u304b\uff1f is_uruu = ->(year) { (year % 4 == 0 && year % 100 != 0) || year % 400 == 0 } #\u897f\u66a61\u5e741\u67081\u65e5\u304b\u3089\u4f55\u65e5\u76ee\u304b\uff08\u3059\u3079\u3066\u30b0\u30ec\u30b4\u30ea\u30aa\u66a6\u3067\u8a08\u7b97\uff09 days = ->(year, month, day) \u2026","image_url":null,"type":"rich","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fobelisk.hatenablog.com%2Fentry%2F2018%2F03%2F25%2F233208\" title=\"Ruby \u3067\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u51fa\u529b\u3057\u3066\u307f\u305f - Camera Obscura\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog"}