I can hear from here "Oh no, not again this question!" ;)
But this time it is not a question it is a feature suggestion.
What if we replace in RcppArmadilloWrap.h:64:
template <typename T> SEXP wrap( const arma::Col<T>& data ){
return RcppArmadillo::arma_wrap( data, Dimension( data.n_elem, 1) ) ;
}
by something like:
template <typename T> SEXP wrap( const arma::Col<T>& data ){
#ifdef RETURN_COLVEC_AS_VECTOR
return RcppArmadillo::arma_wrap( data ) ;
#else
return RcppArmadillo::arma_wrap( data, Dimension( data.n_elem, 1) ) ;
#endif
}
In this way, a legacy code relying on one column matrix is not impacted,
while other users can define a macro RETURN_COLVEC_AS_VECTOR
before "#include <Rcpp>" and enjoy a more intuitive behavior.
Was it already proposed and rejected?
Best,
Serguei.
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