only boost::any_cast<double> can work.. "ClassyK_Danad" ???? news:eiu90m$48t$1@sea.gmane.org...

#include <iostream> #include

template boost::any min(const A& a,const B& b) { return a < b ? a : b; }

void main() { //got a bad_any_cast exception ! std::cout << boost::any_cast<int>( min( 1, 1.1)) << std::endl; }

how could this happen?

ClassyK_Danad wrote:

return a < b ? a : b;

A conditional expression can only return one type, so one of the values must be promoted to the other. (In this case, int -> double.) Split it into a full if statement and it should work. Sebastian Redl