我想要一个类中的多索引容器,这取决于类中依赖于模板的类。听起来很复杂,代码如下:
#include <boost/unordered_map.hpp>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/hashed_index.hpp>
#include <boost/multi_index/random_access_index.hpp>
#include <boost/multi_index/ordered_index.hpp>
#include <boost/multi_index/member.hpp>
template <typename Type>
class myDataContainer{
public:
struct DataStruct{
double t;
std::vector<Type> data;
};
// indices structs
struct TagTime{};
struct TagOrdered{};
typedef boost::multi_index::multi_index_container<
DataStruct,
boost::multi_index::indexed_by<
boost::multi_index::hashed_unique<boost::multi_index::tag<TagTime>, boost::multi_index::member<DataStruct, double, &DataStruct::t> >,
boost::multi_index::ordered_unique<boost::multi_index::tag<TagOrdered>, boost::multi_index::member<DataStruct, double, &DataStruct::t> > // this index represents timestamp incremental order
>
> InnerDataContainer;
typedef typename boost::multi_index::index<InnerDataContainer,TagTime>::type timestamp_view;
typedef typename boost::multi_index::index<InnerDataContainer,TagOrdered>::type ordered_view;
InnerDataContainer dataContainer;
void begin(){
ordered_view& ordView = dataContainer.get<TagOrdered>();
ordView.begin();
}
};
int main(int argc, char *argv[])
{
myDataContainer<float> data;
myDataContainer<float>::ordered_view& ordView = data.dataContainer.get<TagOrder>();
ordView.begin();
}
如果没有myDataContainer::begin()
此代码编译的函数,但出现myDataContainer::begin()
以下错误:
main.cpp: In member function 'void myDataContainer<Type>::begin()':
main.cpp:134:66: error: expected primary-expression before '>' token
main.cpp:134:68: error: expected primary-expression before ')' token
我错过了什么吗?这是提升中的错误还是不可能?
在此先感谢