https://wittonbell.github.io/posts/%E7%BC%96%E7%A8%8B/%E8%AF%AD%E8%A8%80/C++/2007-04-30-C++%E8%B7%A8%E5%B9%B3%E5%8F%B0%E6%A8%A1%E6%9D%BF%E7%9A%84%E5%86%99%E6%B3%95/ C++跨平台模板的写法
https://wittonbell.github.io/posts/%E7%BC%96%E7%A8%8B/%E8%AF%AD%E8%A8%80/C++/2007-04-30-C++%E8%B7%A8%E5%B9%B3%E5%8F%B0%E6%A8%A1%E6%9D%BF%E7%9A%84%E5%86%99%E6%B3%95/
C++跨平台模板的写法