{"published":"2017-08-26 18:41:26","version":"1.0","blog_title":"sygh\u306e\u65b0\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u7f6e\u304d\u5834","title":"C# 6.0\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u8208\u5473\u6df1\u3044\u6319\u52d5","url":"https://sygh.hatenadiary.jp/entry/2017/08/26/184126","description":"C#\u8a00\u8a9e\u306fnull\u306b\u95a2\u9023\u3059\u308b\u6f14\u7b97\u5b50\u304c\u8c4a\u5bcc\u3067\u3059\u3002 null\u5408\u4f53\u6f14\u7b97\u5b50 null\u5408\u4f53\u6f14\u7b97\u5b50\u306f\u5de6\u5074\u30aa\u30da\u30e9\u30f3\u30c9\u304cnull\u3067\u306a\u3044\u5834\u5408\u306f\u5de6\u5074\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u8fd4\u3057\u3001null\u306e\u5834\u5408\u306f\u53f3\u5074\u30aa\u30da\u30e9\u30f3\u30c9\u3092\u8fd4\u3057\u307e\u3059\u3002\u53c2\u7167\u578b\u306e\u307b\u304b\u3001Null\u8a31\u5bb9\u578b\uff08Nullable\uff09\u306b\u3082\u9069\u7528\u53ef\u80fd\u3067\u3059\u3002C# 2.0\u3067\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002 x ?? alt \u4e09\u9805\u6f14\u7b97\u5b50\u3067\u66f8\u304f\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 x != null ? x : alt null\u6761\u4ef6\u6f14\u7b97\u5b50 null\u6761\u4ef6\u6f14\u7b97\u5b50\u306f\u30aa\u30da\u30e9\u30f3\u30c9\u304cnull\u3067\u306a\u3044\u5834\u5408\u306f\u30e1\u30f3\u30d0\u30fc\u30a2\u30af\u30bb\u30b9\uff08.\u3082\u3057\u304f\u306f[]\uff09\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u53c2\u7167\u578b\u306e\u307b\u304b\u3001Null\u8a31\u5bb9\u578b\uff08Nullable\uff09\u306b\u3082\u9069\u7528\u53ef\u80fd\u3067\u3059\u3002C# 6.0\u3067\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u2026","blog_url":"https://sygh.hatenadiary.jp/","categories":[".NET Framework","C#","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0Tips"],"height":"190","image_url":null,"type":"rich","author_url":"https://blog.hatena.ne.jp/sygh/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsygh.hatenadiary.jp%2Fentry%2F2017%2F08%2F26%2F184126\" title=\"C# 6.0\u30b3\u30f3\u30d1\u30a4\u30e9\u30fc\u306e\u8208\u5473\u6df1\u3044\u6319\u52d5 - sygh\u306e\u65b0\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u7f6e\u304d\u5834\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","author_name":"sygh"}