{"image_url":null,"published":"2021-09-17 22:54:46","blog_title":"pyopyopyo - Linux\u3068\u304b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u899a\u3048\u66f8\u304d - ","url":"https://pyopyopyo.hatenablog.com/entry/2021/09/17/225446","title":"SFINAE\u3067\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3055\u308c\u305f\u95a2\u6570\u3092\u691c\u51fa\u3059\u308b\u65b9\u6cd5","description":"C++ \u306eSFINAE (Substitution Failure Is Not An Error)\u3092\u4f7f\u3063\u3066\uff0c\u30af\u30e9\u30b9 T \u306b foo(int a, int b)\u304c\u3042\u308b\u304b\u5426\u304b\u3092\u8abf\u3079\u308b\u65b9\u6cd5\u3067\u3059\uff0e \u7c21\u5358\u306a\u4f8b(class T\u306b \u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3055\u308c\u305f\u95a2\u6570\u304c\u306a\u3044\u5834\u5408) \u307e\u305a\u306f\u30b7\u30f3\u30d7\u30eb\u306b\uff0c\u30af\u30e9\u30b9 T \u306b\u5bfe\u3057\u3066T::foo \u304c\u5b58\u5728\u3059\u308b\u304b\u3069\u3046\u304b\u8abf\u3079\u308b\u30b3\u30fc\u30c9\u3092\u7528\u610f\u3057\u307e\u3059\uff0eSFINAE\u306e\u5b9f\u88c5\u306f\uff0cc++11\u3067\u5c0e\u5165\u3055\u308c\u305f type_traits \u306e std::false_type \u3068 std::true_type \u3092\u4f7f\u3046\u3068\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u307e\u3059\uff0e(\u3081\u3093\u3069\u304f\u3055\u3044\u306e\u3067\u30af\u30e9\u30b9\u306f class\u3058\u3083\u306a\u304f\u3066struct \u3067\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fpyopyopyo.hatenablog.com%2Fentry%2F2021%2F09%2F17%2F225446\" title=\"SFINAE\u3067\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3055\u308c\u305f\u95a2\u6570\u3092\u691c\u51fa\u3059\u308b\u65b9\u6cd5 - pyopyopyo - Linux\u3068\u304b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u899a\u3048\u66f8\u304d - \" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["c++"],"author_url":"https://blog.hatena.ne.jp/pyopyopyo/","provider_url":"https://hatena.blog","blog_url":"https://pyopyopyo.hatenablog.com/","version":"1.0","provider_name":"Hatena Blog","height":"190","author_name":"pyopyopyo","width":"100%","type":"rich"}