[Rcpp-devel] RcppArmadillo and sugar

| Hello,
| 
| After the last thread, I looked again at armadillo and came up with a 
| way to make it aware of Rcpp sugar, so that we can create an armadillo 
| matrix from an Rcpp sugar expression, without having to assign the 
| expression into an Rcpp vector.
| 
| For example :
| 
| 	NumericVector xx(x) ;
| 	arma::mat m = forward( xx + xx ) ;
| 
| But also for complex expressions : (expressions that make complex 
| vectors ) :
| 
| 	ComplexVector xx(x) ;
| 	arma::cx_mat m = forward( exp( xx ) ) ;

Very nice!
 	
| It needs the svn version of both Rcpp and RcppArmadillo to work.
| It does not deal with dimensions at the moment, it just makes a arma 
| matrix with one column, I'll deal with that later.
| 
| 
| The name forward might not be the right verb here, I was also thinking 
| about "melt" so that we melt sugar into caramel, but I'd like to hear 
| what others do with sugar.

How about "salt" ? 

It's shorter too and not as unhealthy and yucky as caramel.

Dirk

Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com