{"author_url":"https://blog.hatena.ne.jp/innocent-zero/","image_url":null,"title":"Date \u578b\u60c5\u5831\u304b\u3089\u6708\u3068\u65e5\u306e\u307f\u3067\u6bd4\u8f03\u3059\u308b (yield_self)","published":"2019-01-02 18:41:47","categories":["Ruby"],"version":"1.0","author_name":"innocent-zero","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgouf.hatenablog.com%2Fentry%2F2019%2F01%2F02%2F184147\" title=\"Date \u578b\u60c5\u5831\u304b\u3089\u6708\u3068\u65e5\u306e\u307f\u3067\u6bd4\u8f03\u3059\u308b (yield_self) - \u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"gouf.hatenablog.com \u3084\u3063\u3066\u308b\u3053\u3068\u306f\u4e0a\u306e\u904e\u53bb\u8a18\u4e8b\u3068\u304a\u306a\u3058 lambda \u306e\u5b9a\u7fa9\u3092\u306a\u304f\u3057\u3066\u3001 yield_self \u3092\u4f7f\u3046\u3088\u3046\u306b\u66f8\u304d\u63db\u3048\u305f \u3053\u3046\u3044\u3046\u3068\u304d\u304c yield_self \u3092\u4f7f\u3046\u5834\u9762\u306a\u306e\u3060\u308d\u304b require 'date' pp current_day = Date.new(2018, 11, 1) # => #<Date: 2018-11-01 ((2458424j,0s,0n),+0s,2299161j)> pp to_comparing_day = Date.new(2018, 11, 15) # => #<Date: 2018-11-15 ((2458438j,0\u2026","height":"190","url":"https://gouf.hatenablog.com/entry/2019/01/02/184147","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","blog_url":"https://gouf.hatenablog.com/","width":"100%","blog_title":"\u30d6\u30ed\u30b0","type":"rich"}