On Dec 12, 2013, at 3:32 PM, Romain Fran?ois <romain at r-enthusiasts.com> wrote:
Hello,
I?m looking for examples on how to manipulate the ... internally, e.g. in a .Call or .External function.
I?m particularly interested in accessing the environment in which each contribution to ... can be evaluated.
Arguments in ... are evaluated *before* being passed down to .Call/.External so there is no ... by the time you enter the C code. AFAIR R doesn't allow you to get at the promises outside of internal code, so you either get the call or the values, but nothing in between.
Cheers,
Simon