We'll probably have something similar in Rcpp at some point.
Le 2012-11-26 21:52, Davor Cubranic a écrit :
Is this macro intended to be used in other, similar contexts?
Otherwise, why not have "switch" inside unique2, as in Hadley's
original code?
Davor
On 2012-11-22, at 7:25 AM, Hadley Wickham wrote:
#define DISPATCH_METHOD(method, x) \
switch( TYPEOF(x) ){ \
case REALSXP: \
return method<REALSXP>(x); \
case INTSXP: \
return method<INTSXP>(x); \
case STRSXP: \
return method<STRSXP>(x); \
case LGLSXP: \
return method<LGLSXP>(x); \
default: \
Rf_error("Unsupported type"); \
return x; \
}
Why do we need a macro here? Is it not possible to pass in method as
a
function? It seems like there must be a more elegant way to do
dynamic dispatch.
Hadley
--
RStudio / Rice University
http://had.co.nz/
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