Dear Dirk,
> Exactly what type of access / use did you have in mind from C / C++? > > Recently, I am developing a trading system involving xts with my friends. To handle xts in c++, I am using `Rcpp::RObject`, xts API, and some C functions found in the source of xts. In my opinion, it might be convenient if there is a c++ class `XtsNumericMatrix` or `XtsIntegerMatrix` which can handle the special attributes such as `index` of xts objects easily. Maybe we can extend existed Rcpp type hierarchy to do this. How do you think? Thanks
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