{"height":"190","type":"rich","author_url":"https://blog.hatena.ne.jp/shepherdMaster/","version":"1.0","author_name":"shepherdMaster","url":"https://shepherdmaster.hateblo.jp/entry/2019/11/14/220526","provider_url":"https://hatena.blog","blog_title":"\u4e16\u754c\u4e2d\u306e\u7f8a\u3092\u304b\u304d\u96c6\u3081\u3066","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshepherdmaster.hateblo.jp%2Fentry%2F2019%2F11%2F14%2F220526\" title=\"1000/02/29\u3092Ruby\u3067invalid\u306a\u65e5\u4ed8\u3068\u3057\u3066\u6271\u3046\u65b9\u6cd5\u3001\u3082\u3057\u304f\u306fRuby\u30671582\u5e74\u4ee5\u524d\u306e\u66a6\u3092\u30e6\u30ea\u30a6\u30b9\u66a6\u3067\u306f\u306a\u304f\u30b0\u30ec\u30b4\u30ea\u30aa\u66a6\u3067\u6271\u3046\u65b9\u6cd5 - \u4e16\u754c\u4e2d\u306e\u7f8a\u3092\u304b\u304d\u96c6\u3081\u3066\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"width":"100%","provider_name":"Hatena Blog","description":"\u7d50\u8ad6 Ruby\u306eDate\u30af\u30e9\u30b9\u306b\u306f start\u3092\u5f15\u6570\u306b\u6307\u5b9a\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308b\u3002 docs.ruby-lang.org start\u306f\u30b0\u30ec\u30b4\u30ea\u30aa\u66a6\u3092\u3064\u304b\u3044\u59cb\u3081\u305f\u65e5\u3092\u3042\u3089\u308f\u3059\u30e6\u30ea\u30a6\u30b9\u65e5\u3092\u8868\u3059\u3002 \u5f15\u6570\u306estart\u306bDate::GREGORIAN\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u5e38\u306b\u30b0\u30ec\u30b4\u30ea\u30aa\u66a6\u3067\u51e6\u7406\u3057\u3066\u304f\u308c\u308b\u3002 Date.valid_date?(1000, 2, 29, Date::GREGORIAN) => false Date.parse('1000-2-29', true, Date::GREGORIAN) => ArgumentError (invalid date) \u7d4c\u7def MySQL\u306f\u65e5\u4ed8\u30ab\u30e9\u30e0\u306b 1000-\u2026","categories":["Ruby"],"published":"2019-11-14 22:05:26","title":"1000/02/29\u3092Ruby\u3067invalid\u306a\u65e5\u4ed8\u3068\u3057\u3066\u6271\u3046\u65b9\u6cd5\u3001\u3082\u3057\u304f\u306fRuby\u30671582\u5e74\u4ee5\u524d\u306e\u66a6\u3092\u30e6\u30ea\u30a6\u30b9\u66a6\u3067\u306f\u306a\u304f\u30b0\u30ec\u30b4\u30ea\u30aa\u66a6\u3067\u6271\u3046\u65b9\u6cd5","blog_url":"https://shepherdmaster.hateblo.jp/"}