Hi, For a matrix, the size intuitively should be just nrow * ncol. Hence, it is reasonable to call size(). But the following code gives errors, because two parent class all have the size() member function. Should something be done to make one of them available to NumericMatrix?
suppressPackageStartupMessages(library(inline)) src=' Rcpp::NumericMatrix x(mx); return wrap(x.size()); ' fun=cxxfunction(signature(mx="numeric"), src, plugin="Rcpp") orig=matrix(1:6, 2, 3) fun(orig) Error in compileCode(f, code, language = language, verbose = verbose) : Compilation ERROR, function(s)/method(s) not created! file3b8313201138.cpp: In function ‘SEXPREC* file3b8313201138(SEXPREC*)’: file3b8313201138.cpp:32: error: request for member ‘size’ is ambiguous /Library/Frameworks/R.framework/Versions/2.15/Resources/library/Rcpp/include/Rcpp/vector/MatrixBase.h:46: error: candidates are: int Rcpp::MatrixBase<RTYPE, na, MATRIX>::size() const [with int RTYPE = 14, bool na = true, MATRIX = Rcpp::Matrix<14>] /Library/Frameworks/R.framework/Versions/2.15/Resources/library/Rcpp/include/Rcpp/vector/Vector.h:275: error: R_len_t Rcpp::Vector<RTYPE>::size() const [with int RTYPE = 14] make: *** [file3b8313201138.o] Error 1 Calls: cxxfunction -> compileCode Execution halted -- Regards, Peng _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
