{"provider_name":"Hatena Blog","height":"190","image_url":null,"description":"C++ \u3067\u306f\u3001int* p = NULL; \u3058\u3083\u306a\u304f int* p = 0; \u3068\u66f8\u304f\u306e\u304c\u6b63\u3057\u3044\u3001\u3068\u304b\u305d\u3046\u3044\u3046\u3053\u3068\u3058\u3083\u306a\u304f\u3066\u3001\u30dd\u30a4\u30f3\u30bf\u30fc\u3092\u4f7f\u308f\u306a\u3044\u9650\u308a NULL \u3092\u8868\u73fe\u3067\u304d\u306a\u3044\u3089\u3057\u3044\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u4e0d\u4fbf\u3060\u3002 \u3069\u3046\u3044\u3046\u3053\u3068\u304b\u3068\u3044\u3046\u3068\u3001Java \u3060\u3068\u5024\u304c\u5165\u3063\u3066\u3044\u306a\u3044\u5909\u6570(\u53c2\u7167\u304c\u306a\u3044\u5909\u6570)\u306f A a = null; \u306e\u3088\u3046\u306b\u30de\u30fc\u30af\u4ed8\u3051\u3057\u305f\u308a\u3001\u3042\u308b\u3044\u306f\u305d\u308c\u3092 if (a == null) \u306e\u3088\u3046\u306b\u691c\u67fb\u3057\u305f\u308a\u3067\u304d\u305f\u304c\u3001C++ \u3067\u306f\u305d\u308c\u304c\u30dd\u30a4\u30f3\u30bf\u30fc\u3092\u4f7f\u308f\u306a\u3044\u9650\u308a\u3067\u304d\u306a\u3044\u3002\u3060\u304b\u3089\u3001Java \u306e\u611f\u899a\u3067 C++ \u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304f\u3068\u3001\u30dd\u30a4\u30f3\u30bf\u30fc\u306e\u5d50\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3002\u305d\u3057\u3066\u30dd\u30a4\u30f3\u30bf\u30fc\u3092\u4f7f\u3046\u3068\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u5bff\u547d\u3092\u975e\u5e38\u306b\u2026","blog_title":"unibon\u306e\u65e5\u8a18","url":"https://unibon.hatenadiary.org/entry/20050115/p10","author_name":"unibon","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Funibon.hatenadiary.org%2Fentry%2F20050115%2Fp10\" title=\"C++ \u3067\u306f NULL \u304c\u306a\u3044\u306e\u3067\u4e0d\u4fbf - unibon\u306e\u65e5\u8a18\" 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","published":"2005-01-15 00:00:09","version":"1.0","blog_url":"https://unibon.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/unibon/","type":"rich","title":"C++ \u3067\u306f NULL \u304c\u306a\u3044\u306e\u3067\u4e0d\u4fbf"}