{"image_url":null,"author_name":"toburau","provider_name":"Hatena Blog","blog_url":"https://toburau.hatenablog.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftoburau.hatenablog.jp%2Fentry%2F20110322%2F1300811962\" title=\"\u30ad\u30e3\u30b9\u30c8 - \u30b2\u30fc\u30e0\u304c\u4f5c\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u304c\u3093\u3070\u308b\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>","author_url":"https://blog.hatena.ne.jp/toburau/","description":"C++\u306e\u30ad\u30e3\u30b9\u30c8\u306e\u307e\u3068\u3081\u3002 static_cast int\u3084float\u306a\u3069\u306e\u5909\u63db\u306b\u4f7f\u3046\u30ad\u30e3\u30b9\u30c8\u3002\u578b\u5909\u63db\u304c\u884c\u308f\u308c\u308b\u3002C\u3067\u306e\u30ad\u30e3\u30b9\u30c8\u3068\u540c\u3058\u3088\u3046\u306a\u3082\u306e\u3002 reinterpret_cast \u5358\u306a\u308b\u578b\u5909\u66f4\u306e\u30ad\u30e3\u30b9\u30c8\u3002\u578b\u5909\u63db\u306f\u884c\u308f\u308c\u306a\u3044\u3002\u30dd\u30a4\u30f3\u30bf\u3068\u6574\u6570\u3092\u5909\u63db\u3059\u308b\u3068\u304b\u3001\u3042\u308b\u578b\u306e\u30dd\u30a4\u30f3\u30bf\u304b\u3089\u5225\u306e\u578b\u306e\u30dd\u30a4\u30f3\u30bf\u306b\u3059\u308b\u3068\u304d\u306b\u4f7f\u3046\u3002 const_cast const\u5c5e\u6027\u3092\u5916\u3059\u3068\u304d\u306b\u4f7f\u3046\u3002\u57fa\u672c\u7684\u306b\u3053\u308c\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u3089\u8a2d\u8a08\u3092\u898b\u306a\u304a\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3002 dynamic_cast \u6b63\u3057\u304f\u30ad\u30e3\u30b9\u30c8\u3067\u304d\u308b\u3068\u304d\u306b\u306f\u30ad\u30e3\u30b9\u30c8\u3057\u3001\u3067\u304d\u306a\u3044\u3068\u304d\u306fnull\u3092\u8fd4\u3059\u3002\u3042\u308b\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u89aa\u30af\u30e9\u30b9\u306e\u30dd\u30a4\u30f3\u30bf\u3067\u53d7\u3051\u53d6\u3063\u305f\u3068\u304d\u3001\u6d3e\u751f\u30af\u30e9\u30b9\u3078\u3068\u2026","width":"100%","blog_title":"\u30b2\u30fc\u30e0\u304c\u4f5c\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u307e\u3067\u304c\u3093\u3070\u308b\u65e5\u8a18","provider_url":"https://hatena.blog","categories":["C++"],"url":"https://toburau.hatenablog.jp/entry/20110322/1300811962","type":"rich","published":"2011-03-22 01:39:22","height":"190","title":"\u30ad\u30e3\u30b9\u30c8","version":"1.0"}