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有没有办法将std :: map索引作为参数传递给const函数?在const函数内通过参数索引返回std :: map的值
const SurfaceProperties & SurfacePropertiesImpl::getSurfaceProperties(const std::string entityId) const
{
return mSurfaceProperties[entityId];
}
-
error: passing ‘const std::map<std::__cxx11::basic_string<char>, SurfaceProperties>’ as ‘this’ argument discards qualifiers [-fpermissive]
return mSurfaceProperties[entityId];