On 7 January 2012 at 19:02, Romain François wrote:
| Not thinking about a rewrite, just adding e.g. this for int:
|
| template <> inline int as<int>( SEXP x,
| ::Rcpp::traits::r_type_primitive_tag ) {
| return Rf_asInteger( x ) ;
| }
|
| so that we let R's asInteger do the actual work, and Doug is right, it
| does a better job than the current emplated version.
|
| For example this works:
|
| > fx <- cxxfunction( signature(x_="ANY"), ' int x = as<int>( x_ );
| return wrap(x); ', plugin="Rcpp")
| >
| > fx( "123" )
| [1] 123
Right. Specialisation makes sense as we just add features like the
char-to-int cast.
| However,
|
| > fx( c(1L, 3L ) )
| [1] 1
|
| this passes, where as the current version complains that it should be a
| single value.
Which is a very useful test to have. Hmpf.
Dirk
--
"Outside of a dog, a book is a man's best friend. Inside of a dog, it is too
dark to read." -- Groucho Marx
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