{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fir9.hatenablog.jp%2Fentry%2F20050223%2F1169581800\" title=\"\u8b0e\u306e\u30af\u30e9\u30b9 - \u3044\u308d\u304d\u3085\u3046\u306e\uff08\u5143\uff09\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc\" 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/ir9/","provider_name":"Hatena Blog","categories":["theSpoke"],"title":"\u8b0e\u306e\u30af\u30e9\u30b9","height":"190","version":"1.0","image_url":null,"description":"\u67d0\u533f\u540d\u63b2\u793a\u677f\u3067\u898b\u3064\u3051\u305f\u30b3\u30fc\u30c9\u3002(\u53ef\u5909\u3057\u3066\u307e\u3059\u304c\u610f\u5473\u306f\u540c\u3058) struct A{ template<typename T> T* () { return 0; }};int func(){ A a; a[0]; // OK return 0;}\u3053\u3093\u306a\u30b3\u30fc\u30c9\u3002a[0] \u3067 A::operator T* \u304c\u52dd\u624b\u306b\u547c\u3070\u308c\u308b\u308f\u3051\u3067\u3059\u306d\u3002 \u547c\u3070\u308c\u308b\u306e\u306f\u59a5\u5f53\u3060\u3068\u601d\u3046\u3093\u3067\u3059\u3002 \u304c\u3001\u3053\u306e\u5834\u5408\u306e T \u3063\u3066\u4f55\u3092\u6307\u3059\u306e\u3088\u3068\uff1f\u3064\u30fc\u308f\u3051\u3067\u3001typeid(T).name() \u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u300cclass `template-parameter-257'\u300d \u3061\u3085\u30fc\u578b\u540d\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002 \u3044\u304b\u306b\u3082\u30c6\u30f3\u30dd\u30e9\u30ea\u306a\u578b\u540d\u3067\u3059\u306a\u3041\u3002\uff08\u7b11\u66f4\u2026","blog_url":"https://ir9.hatenablog.jp/","blog_title":"\u3044\u308d\u304d\u3085\u3046\u306e\uff08\u5143\uff09\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc","published":"2005-02-23 04:50:00","url":"https://ir9.hatenablog.jp/entry/20050223/1169581800","author_name":"ir9","width":"100%","type":"rich","provider_url":"https://hatena.blog"}