{"id":9780,"date":"2012-04-22T12:00:45","date_gmt":"2012-04-22T03:00:45","guid":{"rendered":"http:\/\/www.sssg.org\/blogs\/hiro345\/?p=9780"},"modified":"2012-04-21T13:45:08","modified_gmt":"2012-04-21T04:45:08","slug":"%e7%b5%8c%e9%81%8e%e7%a7%92%e3%81%ae%e8%a8%88%e7%ae%97","status":"publish","type":"post","link":"https:\/\/www.hiro345.net\/blogs\/hiro345\/archives\/9780.html","title":{"rendered":"\u7d4c\u904e\u65e5\u6570\u306e\u8a08\u7b97"},"content":{"rendered":"

1582\u5e7410\u670815\u65e5\u304b\u3089\u306e\u7d4c\u904e\u79d2\u3092\u77e5\u308a\u305f\u304f\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7d44\u3093\u3067\u307f\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u5358\u7d14\u306b\u7b97\u51fa\u306a\u3089Ruby\u3067\u3055\u3063\u304f\u308a\u3068\u3044\u304f\u3053\u3068\u3092\u77e5\u308a\u307e\u3057\u305f\u3002@tmtms\u3055\u3093\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002Rational\u306f\u5206\u6570\u3092\u8868\u73fe\u3057\u3066\u3044\u3066\u3001\u7b2c\u4e00\u5f15\u6570\u3092\u7b2c\u4e8c\u5f15\u6570\u3067\u5272\u3063\u305f\u5024\u306b\u306a\u308a\u307e\u3059\u3002
\n
\nDateTime\u3092\u4f7f\u3046\u3068\u65e5\u6642\u3067\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002\u65e5\u6570\u3060\u3051\u77e5\u308a\u305f\u3044\u5834\u5408\u306fDate\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n

\r\n$ ruby -rdate -e 'p DateTime.new(2001,1,1,0,0,0) - DateTime.new(2000, 1, 1, 0, 0, 0)'\r\nRational(366, 1)\r\n$ ruby -rdate -e 'p Date.new(2000,1,1) - Date.new(1999, 1, 1)'\r\nRational(365, 1)\r\n$ ruby -rdate -e 'p Date.new(2001,1,1) - Date.new(2000, 1, 1)'\r\nRational(366, 1)\r\n<\/pre>\n
\u904e\u53bb\u3060\u3068\u30ab\u30ec\u30f3\u30c0\u30fc\u3092\u5207\u308a\u66ff\u3048\u305f\u308a\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u5931\u308f\u308c\u308b\u65e5\u304c\u3042\u3063\u305f\u308a\u3059\u308b\u306e\u3067\u3059\u304c\u3001\u897f\u66a6\uff08\u30b0\u30ec\u30b4\u30ea\u30a6\u30b9\u6b74\uff09\u3067\u306f1582\u5e7410\u670815\u65e5\u304b\u30891970\u5e741\u67081\u65e5\u307e\u3067\u306b\u305d\u3046\u3044\u3046\u3053\u3068\u306f\u767a\u751f\u3057\u3066\u3044\u306a\u3044\u3088\u3046\u306a\u306e\u3067\u3001\u305d\u306e\u307e\u307e\u5358\u7d14\u306b\u6307\u5b9a\u3057\u3066\u3082\u826f\u3055\u305d\u3046\u3067\u3059\u3002Java\u3068\u6bd4\u8f03\u3092\u3057\u305f\u304b\u3063\u305f\u306e\u3067\u30011000\u5e74\u8db3\u3057\u3066\u30012582\u5e7410\u670815\u65e5\u304b\u30892970\u5e741\u67081\u65e5\u307e\u3067\u306e\u65e5\u6570\u3092\u6570\u3048\u3066\u898b\u307e\u3057\u305f\u3002<\/p>\n
\u307e\u305a\u306f\u30012582\u5e741\u67081\u65e5\u304b\u30892970\u5e741\u67081\u65e5\u307e\u3067\u8abf\u3079\u308b\u3068\u3001\u6b21\u306e\u3068\u304a\u308a\u3002<\/p>\n
\r\n$ ruby -rdate -e 'p Date.new(2970,1,1) - Date.new(2582, 1, 1)'\r\nRational(141714, 1)\r\n<\/pre>\n
\u307e\u305a\u306f\u30012582\u5e7410\u670815\u65e5\u304b\u30892970\u5e741\u67081\u65e5\u307e\u3067\u8abf\u3079\u308b\u3068\u3001\u6b21\u306e\u3068\u304a\u308a\u3002<\/p>\n
\r\n$ ruby -rdate -e 'p DateTime.new(2970,1,1,0,0,0) - DateTime.new(2582, 10, 15, 0, 0, 0)'\r\nRational(141427, 1)\r\n<\/pre>\n
\u30ab\u30ec\u30f3\u30c0\u30fc\u306f\u8a08\u7b97\u3060\u3051\u3067\u306f\u3067\u306a\u3044\u3082\u306e\u3082\u3042\u308a\u3001\u958f\u79d2\u3068\u304b\u3082\u8003\u616e\u3057\u305f\u3044\u6642\u304c\u3042\u308b\u306e\u3067\u3001\u6c17\u3092\u3064\u3051\u306a\u3044\u3068\u3044\u3051\u307e\u305b\u3093\u304c\u3001\u5358\u7d14\u8a08\u7b97\u3060\u3051\u306a\u3089\u3001\u3053\u308c\u3067\u5341\u5206\u3067\u3059\u306d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
1582\u5e7410\u670815\u65e5\u304b\u3089\u306e\u7d4c\u904e\u79d2\u3092\u77e5\u308a\u305f\u304f\u3066\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u7d44\u3093\u3067\u307f\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u5358\u7d14\u306b\u7b97\u51fa\u306a\u3089Ruby\u3067\u3055\u3063\u304f\u308a\u3068\u3044\u304f\u3053\u3068\u3092\u77e5\u308a\u307e\u3057\u305f\u3002@tmtms\u3055\u3093\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002Rational\u306f\u5206\u6570\u3092\u8868\u73fe\u3057\u3066\u3044\u3066\u3001\u7b2c\u4e00 … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[693,694,74],"class_list":["post-9780","post","type-post","status-publish","format-standard","hentry","category-program","tag-date","tag-datetime","tag-ruby"],"_links":{"self":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/9780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/comments?post=9780"}],"version-history":[{"count":4,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/9780\/revisions"}],"predecessor-version":[{"id":9803,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/posts\/9780\/revisions\/9803"}],"wp:attachment":[{"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/media?parent=9780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/categories?post=9780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hiro345.net\/blogs\/hiro345\/wp-json\/wp\/v2\/tags?post=9780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}