{"author_name":"matzryo","description":"\u7d4c\u7def Rails4\u3067\u3001\u65e5\u4ed8\u306e\u8db3\u3057\u7b97\u306e\u6319\u52d5\u304c\u81ea\u5206\u306e\u671f\u5f85\u3068\u7570\u306a\u3063\u3066\u3044\u305f\u306e\u3067\u8abf\u67fb\u3057\u305f\u3002 1/31\u306e\u7fcc\u6708\u306e\u7fcc\u6708\u3082\u30011/31\u306e\u4e8c\u30f6\u6708\u5f8c\u3082\u3001\u3069\u3061\u3089\u30822018/3/31\u306b\u306a\u308b\u306e\u3092\u671f\u5f85\u3057\u3066\u3044\u305f\u304c\u3001\u5b9f\u969b\u306e\u7d50\u679c\u306f\u7570\u306a\u3063\u305f\u3002 \u524d\u8005\u306f\u300c1/31\u306e\u7fcc\u6708\u306e\u7fcc\u6708\u300d => \u300c2/28\u306e\u7fcc\u6708\u300d => \u300c3/28\u300d\u3068\u51e6\u7406\u3055\u308c\u3066\u3044\u308b\u3082\u3088\u3046\u3002 Loading development environment (Rails 4.2.10) irb(main):001:0> 1.month + 1.month == 2.month => true irb(main):002:0> Date.new(2018, 1, 31) + (1.mo\u2026","image_url":null,"type":"rich","blog_url":"https://blog.matzryo.com/","version":"1.0","height":"190","provider_name":"Hatena Blog","url":"https://blog.matzryo.com/entry/2018/08/12/230123","published":"2018-08-12 23:01:23","provider_url":"https://hatena.blog","width":"100%","author_url":"https://blog.hatena.ne.jp/matzryo/","categories":[],"title":"Rails4, Rails5\u306e\u6642\u9593\u306e\u8db3\u3057\u7b97\u306e\u6319\u52d5\u306e\u9055\u3044","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.matzryo.com%2Fentry%2F2018%2F08%2F12%2F230123\" title=\"Rails4, Rails5\u306e\u6642\u9593\u306e\u8db3\u3057\u7b97\u306e\u6319\u52d5\u306e\u9055\u3044 - matzryo\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"matzryo\u2019s diary"}