{"image_url":null,"type":"rich","blog_url":"https://shinriyo.hateblo.jp/","url":"https://shinriyo.hateblo.jp/entry/20110609/p2","blog_title":"\u4e07\u5e74\u7d20\u4eba\u304b\u3089Hacker\u3078\u306e\u9053","description":"\u4eca\u307e\u3067JavaScript\u3067\u300cx\u304cnull\u3067\u306a\u3051\u308c\u3070x\u3092\u305d\u306e\u307e\u307e\u3001\u305d\u3046\u3067\u306a\u3051\u308c\u3070\u3001y\u300d\u3068\u3044\u3046\u306e\u3092\u4ee5\u4e0b\u306e\u4e09\u9805\u6f14\u7b97\u5b50\u3067\u3084\u3063\u3066\u305f\u3002 \u203bRuby\u3067\u306f\u3082\u3063\u3068\u77ed\u304f\u304b\u3051\u305f\u6c17\u304c\u3059\u308b\u3002 hoge = x ? x : y \u3067\u3082\u3001\u5148\u7a0b\u306ex\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5f0f\u304c\u9577\u3044\u6642\u304c\u51c4\u3044\u5197\u9577\u3002 \u540c\u3058\u5f0f\u3092\uff12\u5ea6\u3082\u66f8\u304f\u306e\u306f\u5acc\u3002DRY\u3057\u305f\u3044\u3002 hoge = hoge+bar*foo ? hoge+bar*foo : y \u5909\u6570\u00d7\u306b\u5165\u308c\u3066\u3084\u308d\u3046\u3068\u601d\u3063\u305f\u304c\u3001\u3053\u308c\u306f\u3067\u304d\u306a\u3044 hoge = (x=hoge+bar*foo) ? x : y C#\u306b\u306fnull\u5408\u4f53\u6f14\u7b97\u5b50\u3067\u3053\u3093\u306a\u66f8\u304d\u65b9\u304c\u3067\u304d\u308b\u3002 hoge = x ?? y\u3060\u304b\u3089\u5148\u7a0b\u306e\u3046\u3056\u3044\u5f0f\u3082\u3053\u3093\u306a\u98a8\u306b\u3067\u304d\u2026","author_url":"https://blog.hatena.ne.jp/shinriyo/","provider_name":"Hatena Blog","published":"2011-06-09 00:00:01","categories":[],"width":"100%","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshinriyo.hateblo.jp%2Fentry%2F20110609%2Fp2\" title=\" null\u5408\u4f53\u6f14\u7b97\u5b50\uff08\u306c\u308b\u304c\u3063\u305f\u3044\u3048\u3093\u3056\u3093\u3057\u3001null coalescing operator\uff09C# - \u4e07\u5e74\u7d20\u4eba\u304b\u3089Hacker\u3078\u306e\u9053\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"shinriyo","provider_url":"https://hatena.blog","title":" null\u5408\u4f53\u6f14\u7b97\u5b50\uff08\u306c\u308b\u304c\u3063\u305f\u3044\u3048\u3093\u3056\u3093\u3057\u3001null coalescing operator\uff09C#","height":"190"}