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R's structures inside C++

Connecting R with C++ is very easy because near all work needed to glue the code together is done by Rcpp. However, there are some very dangerous traps. C++, when used improperly can mess up a lot of things in the R session. In this post, I want to show you how to write secure C++ code to reduce the chances of breaking anything in R. References. When working with R, we usually do not care if the object is copied or not.