init hook

[romainfrancois]

Could the R_init_{pkg} have the flexibility to call something after registering the routines, i.e. maybe a function decorated with an [[Rcpp::init]] attribute:

// [[Rcpp::init]]
void initialize(){
   // ...
}

or perhaps just recognize Rcpp_init_{pkg}

[eddelbuettel]

That's so far a rough sketch but that should work, and could be helpful.

Care to work out a mocked minimal example that does this?

[eddelbuettel]

Closed via merge of #903