Hi, I find myself in need of a function to turn a vector of Scalar to an Array of the same datatype. The data type is known at the runtime. e.g.
shared_ptr<ArrayData> concat_scalars(vector<shared_ptr<Scalar> values. shared_ptr<DataType> type); I wonder if I need to use sth like Scalar::Accept(ScalarVisitor*) or is there an easier/better way to achieve this? For context, I am trying to implement UDF support for hash aggregation, each UDF invocation will give me back one Scalar (for each group), and I need to concat them in the HashAggregateKernel finalize method. So performance is not a large concern here, time in the UDF would likely dominate the total runtime. Thanks! Li
