{"width":"100%","version":"1.0","blog_url":"https://blog.cryolite.net/","description":"\u6700\u521d\u3060\u3051\u7279\u5225\u306a\u8a55\u4fa1\u3092\u3057\u3066\uff0c\u4ee5\u964d\u306f\u5225\u306e\u8a55\u4fa1\u3092\u7e70\u308a\u8fd4\u3059\u30de\u30af\u30ed\u3092\u8003\u3048\u3066\u3044\u305f\uff0e\u7d50\u679c\uff0cboost::preprocessor\u304cinclude\u30c7\u30a3\u30ec\u30af\u30c6\u30a3\u30d6\u3092\u5fc5\u8981\u3068\u3059\u308b\u7406\u7531\u306e\u672c\u8cea\u3092\u4f55\u3068\u306a\u304f\u609f\u308b\uff0e\u3063\u3066\u3044\u3046\u304b\u305d\u3093\u306a\u3053\u3068\u609f\u3063\u3066\u3069\u30fc\u3059\u308b\uff1e\u4ffa // only_once_first_state.hpp #undef ONLY_ONCE #define ONLY_ONCE \"only_once_second_state.hpp\" std::cout << \"2\u5ea6\u76ee\u306f\u7121\u3044\u3068\u601d\u3048\uff01\" << std::endl;// only_once_second_state.hpp std::cout << \"2\u5ea6\u76ee\u306f\u7121\u3044\u3068\u8a00\u3063\u305f\u3060\u308d\u3063\u2026","author_url":"https://blog.hatena.ne.jp/Cryolite/","height":"190","blog_title":"Cry's Blog","image_url":null,"url":"https://blog.cryolite.net/entry/20040912/p1","author_name":"Cryolite","categories":["C++","MetaProgramming"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.cryolite.net%2Fentry%2F20040912%2Fp1\" title=\"\u7537\u306b\u4e8c\u8a00\u306f\u7121\u3044\u7684\u30de\u30af\u30ed - Cry&#39;s Blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2004-09-12 00:00:00","type":"rich","title":"\u7537\u306b\u4e8c\u8a00\u306f\u7121\u3044\u7684\u30de\u30af\u30ed","provider_url":"https://hatena.blog","provider_name":"Hatena Blog"}