Dear All,
Accessing an element of a list that should be TRUE/FALSE does not recognize
the boolean properly in Windows/gcc-4.6.3 unless I use "as". It does the
same surprising thing in Debian Linux with gcc-4.6.4.
But it does do what I expect in Linux, with both gcc (4.9.2) and
clang++-libc++ (3.5.2-1). In Windows, I am using Rtools33.exe, the latest
Rtools.exe (downloaded last night).
Given the above, is it the proper way to proceed to always use "as<bool>"?
Or, just being extra careful, should we "as<whatever>" (double, int, etc)?
Best,
R.
/////////////////////////////////////////////////////
#include <Rcpp.h>
using namespace Rcpp;
// [[Rcpp::export]]
bool readBool(bool boolR) {
bool boolC = boolR;
Rcpp::Rcout << "boolC " << boolC << std::endl;
return boolC;
}
// Does not do what I expect in windows
// [[Rcpp::export]]
bool readList(Rcpp::List theList) {
bool boolC = theList["theBool"];
Rcpp::Rcout << "boolC " << boolC << std::endl;
return boolC;
}
// The following works OK in the three systems
// [[Rcpp::export]]
bool readList2(Rcpp::List theList) {
bool boolC = as<bool>(theList["theBool"]);
Rcpp::Rcout << "boolC " << boolC << std::endl;
return boolC;
}
/***R
readBool(TRUE)
readBool(FALSE)
lTrue <- list(a = 99, theBool = TRUE)
lFalse <- list(a = 99, theBool = FALSE)
readList(lTrue) == lTrue[["theBool"]]
readList(lFalse) == lFalse[["theBool"]] ## WRONG! should be 0
readList2(lTrue) == lTrue[["theBool"]]
readList2(lFalse) == lFalse[["theBool"]] ## OK now: should be 0
*/
////////////////////////////////////////////////
--
Ramon Diaz-Uriarte
Department of Biochemistry, Lab B-25
Facultad de Medicina
Universidad Autónoma de Madrid
Arzobispo Morcillo, 4
28029 Madrid
Spain
Phone: +34-91-497-2412
Email: rdia...@gmail.com
ramon.d...@iib.uam.es
http://ligarto.org/rdiaz
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