Platform independent /dev/null in c++ [duplicate]

Answer 1

you can try ostream(NULL,false), the first input is target output and I don't know what the second input exaclty mean but after tracing code it seems just because ostream has no place to write to, calling operator << is just ignored by ostream. I mean in the first call state changes to bad and after that it's always ignoring input data because of stream state ,so you can use the following code :

void data(std::ostream & stream = ostream(NULL,false)){
    stream << "DATA" ;
}