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fix __VA_ARGS__ on windows unfold error and register_handler name error #2

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CBHXuTT wants to merge 1 commit into qicosmos:main from CBHXuTT:dev

CBHXuTT commented Jun 19, 2021

__VA_ARGS__ 在windows上visual studio上不能正确展开，只能被识别为一个参数。
1）可以在cmake中添加set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zc:preprocessor")，但是会带来一些警告。
2）通过宏#define EXPAND( ... ) __VA_ARGS__再转一层可以解决。

template<typename Self, typename Function>
int register_handler(Self&& self, std::string const& name, const Function& f) {
  register_handler(name, f, &self);
  return 0;
}

register_handler(name, f, &self);会导致name少了首字母


          fix __VA_ARGS__ on windows unfold error and register_handler name error

e56efe8

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