对成员函数set_value的错误调用是ambigious（在使用pugixml库的xcode中）

Question

i am using pugixml in visual c++ express 2010. this code works. however when i use it in xcode. it gives me an error that 'call to member function ''set_value'' is ambigious'. can any body help in solving it or why it is giving me error in xcode.

for (size_t k = 0; k < num; ++k) {

    for (size_t v = 0; v < height; ++v) {

        if(width==2){
            pugi::xml_node weightNode = weightsNode.append_child("Test_Output");
            weightNode.append_attribute("No").set_value(k);
            weightNode.append_attribute("index1").set_value(v);
            weightNode.append_attribute("index2").set_value(v);  //as 1x2 case first value position is (0x0)
            weightNode.append_attribute("value").set_value(networks[k][6][0].at<double>(v,v));
            weightNode.append_attribute("index1").set_value(v);
            weightNode.append_attribute("index2").set_value(v+1);
            weightNode.append_attribute("value").set_value(networks[k][6][0].at<double>(v,v+1));
        }else{
            for (size_t u = 0; u < width; ++u) {
                pugi::xml_node weightNode = weightsNode.append_child("Output");
                weightNode.append_attribute("No").set_value(k);
                weightNode.append_attribute("index1").set_value(v);
                weightNode.append_attribute("index2").set_value(u);
                weightNode.append_attribute("value").set_value(networks[k][6][0].at<double>(v,u));
                weightNode.append_attribute("index1").set_value(v);
                weightNode.append_attribute("index2").set_value(u);
                weightNode.append_attribute("value").set_value(networks[k][6][0].at<double>(v,u));
            }
        }
    }
}

can any body pinpoint why it is giving error in xcode. however it works properly in visual c++.

thanks

Answer 1

According to the documentation , there are overloads of set_value for several types:

bool set_value(const char_t* rhs);
bool set_value(int rhs);
bool set_value(unsigned int rhs);
bool set_value(double rhs);
bool set_value(bool rhs); 

but not for size_t , unless it happens to be an alias for unsigned int .

You'll need to either change the type of k and v to unsigned int , or cast when calling set_value . If you need support for very large values which aren't representable by unsigned int , then you'll need a better library.