{"description":"Ruby 2.3 \u3067 Safe Navigation Operator(&.)\u3068\u3044\u3046\u65b0\u3057\u3044\u6f14\u7b97\u5b50\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002 \u3053\u308c\u306f obj&.to_i \u3068\u3044\u3046\u98a8\u306b\u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\u306e\u3088\u3046\u306b\u4f7f\u3044\u3001\u30ec\u30b7\u30fc\u30d0\u304c nil \u306e\u5834\u5408\u306b nil \u3092\u8fd4\u3057\u307e\u3059\u3002 10&.to_s # => \"10\" nil&.to_s # nil \u3053\u306e\u3088\u3046\u306b nil \u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u306a\u304f\u5b89\u5168\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002 #try Rails \u306e ActiveSupport \u306b\u3082 #try \u3068\u3044\u3046\u4f3c\u305f\u3088\u3046\u306a\u30e1\u30bd\u30c3\u30c9\u304c\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002 \u3053\u308c\u306f\u30ec\u30b7\u30fc\u30d0\u304c\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u3060\u305b\u308b\u5834\u5408\u306b\u305d\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3068\u3044\u3046\u3088\u3046\u306a\u51e6\u7406\u306b\u306a\u308a\u307e\u3059\u3002 \u307e\u2026","categories":["Ruby"],"published":"2016-09-02 00:00:00","image_url":null,"blog_url":"https://secret-garden.hatenablog.com/","provider_url":"https://hatena.blog","title":"Ruby \u306e &. \u3068 #try \u306e\u9055\u3044","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsecret-garden.hatenablog.com%2Fentry%2F2016%2F09%2F02%2F000000\" title=\"Ruby \u306e &amp;. \u3068 #try \u306e\u9055\u3044 - Secret Garden(Instrumental)\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","provider_name":"Hatena Blog","width":"100%","url":"https://secret-garden.hatenablog.com/entry/2016/09/02/000000","author_url":"https://blog.hatena.ne.jp/osyo-manga/","blog_title":"Secret Garden(Instrumental)","version":"1.0","author_name":"osyo-manga"}