squidszyd opened a new issue #12135: Writing own C++ Data Iter
URL: https://github.com/apache/incubator-mxnet/issues/12135
   I'm currently implementing a data iterator for generating data multi-task 
model, which needs various data and labels as input. However, as I going on, 
I've found that the data holder `InstVector` is designed to hold only one data 
and one label. 
   Should the `Push` method of `InstVector` be designed like this ?
   inline void Push(unsigned index, 
                    std::vector<mshadow::Shape<3>>& dshape, 
                    std::vector<mshadow::Shape<1>>& lshape)  // b.t.w., it is 
not friendly for label other than 1-Dim
   Or, is there another way?

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