{"height":"190","type":"rich","url":"https://rubytips86.hatenablog.com/entry/2014/03/24/130346","author_name":"rubytips86","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frubytips86.hatenablog.com%2Fentry%2F2014%2F03%2F24%2F130346\" title=\"File\u306e\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8abf\u67fb\u3059\u308b - Ruby Tips!\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"File\u306b\u306f\u30d5\u30a1\u30a4\u30eb\u306e\u8abf\u67fb\u306b\u4f7f\u3048\u308b\u4ee5\u4e0b\u306e\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u3002 \u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9 \u610f\u5473 exist? \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b size? \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u3066\u3001\u304b\u3064\u7a7a\u3067\u306a\u3044\u304b zero? \u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3057\u3066\u3001\u304b\u3064\u7a7a\u304b file? \u30d5\u30a1\u30a4\u30eb\u304b directory? \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u304b symlink? \u30b7\u30f3\u30dc\u30ea\u30c3\u30af\u30ea\u30f3\u30af\u304b pipe? \u30d1\u30a4\u30d7\u304b socket? \u30bd\u30b1\u30c3\u30c8\u304b blockdev? \u30d6\u30ed\u30c3\u30af\u30c7\u30d0\u30a4\u30b9\u304b chardev? \u30ad\u30e3\u30e9\u30af\u30bf\u30c7\u30d0\u30a4\u30b9\u304b \u4ee5\u4e0b\u306ffoo.txt\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u304b\u3092\u8abf\u67fb\u3059\u308b\u4f8b\u3067\u3042\u308b\u3002 p File.exist?('foo.txt')","published":"2014-03-24 13:03:46","blog_url":"https://rubytips86.hatenablog.com/","width":"100%","version":"1.0","author_url":"https://blog.hatena.ne.jp/rubytips86/","blog_title":"Ruby Tips!","image_url":null,"categories":[],"provider_url":"https://hatena.blog","title":"File\u306e\u30af\u30e9\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u8abf\u67fb\u3059\u308b","provider_name":"Hatena Blog"}