{"height":"190","title":"??\u6f14\u7b97\u5b50\uff08null\u5408\u4f53\u6f14\u7b97\u5b50\uff09","description":"??\u6f14\u7b97\u5b50\uff08null\u5408\u4f53\u6f14\u7b97\u5b50\uff09\u3068\u3044\u3046\u306e\u304c\u3042\u308b\u3002C# 2.0\uff08Visual Studio 2005\u3067\u306eC#\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\uff09\u3067\u3082\u4f7f\u3048\u308b\u3002\u6065\u305a\u304b\u3057\u306a\u304c\u3089\u3001\u3064\u3044\u3055\u3063\u304d\u77e5\u3063\u305f\u2026\u3002 x ?? y \u3068\u66f8\u304f\u3068\u3001x\u304cnull\u306e\u5834\u5408y\u3068\u8a55\u4fa1\u3055\u308c\u3001\u305d\u308c\u4ee5\u5916\u306e\u5834\u5408\u306fx\u3068\u8a55\u4fa1\u3055\u308c\u308b\u3002\u3053\u308c\u3001\u7d76\u5bfe\u4f7f\u3046\u3002\u30b5\u30f3\u30d7\u30eb\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3002 // Oracle\u306eNVL\u307f\u305f\u3044\u306a\u3082\u3093\u3067\u3059\u306d Console.WriteLine(null ?? \"hoge\"); // outputs \"hoge\" // \u9023\u7d9a\u3055\u305b\u3066\u3082OK Console.WriteLine(null ?? \"hoge\" ?? \"fuga\"); // outputs \"hoge\"","author_url":"https://blog.hatena.ne.jp/atsukanrock/","image_url":null,"author_name":"atsukanrock","categories":["C#"],"type":"rich","url":"https://atsukanrock.hatenablog.com/entry/20090401/1238553693","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fatsukanrock.hatenablog.com%2Fentry%2F20090401%2F1238553693\" title=\"??\u6f14\u7b97\u5b50\uff08null\u5408\u4f53\u6f14\u7b97\u5b50\uff09 - atsukanrock\u306e\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>","provider_url":"https://hatena.blog","published":"2009-04-01 11:41:33","blog_title":"atsukanrock\u306e\u30d6\u30ed\u30b0","width":"100%","provider_name":"Hatena Blog","version":"1.0","blog_url":"https://atsukanrock.hatenablog.com/"}