How to test whether stringstream operator>> has parsed a bad type and skip it

Question

I am interested in discussing methods for using stringstream to parse a line with multiple types. I would begin by looking at the following line:

Answer 1

I have built up a more fine tuned version for this, that is able to skip invalid input character wise (without need to separate double numbers with whitespace characters):

#include 
#include 
#include 
using namespace std;

int main() {

    istringstream iss("2.832 1.3067 nana1.678 xxx.05 meh.ugh");
    double num = 0;
    while(iss >> num || !iss.eof()) {
        if(iss.fail()) {
            iss.clear();
            while(iss) {
                char dummy = iss.peek();
                if(std::isdigit(dummy) || dummy == '.') {
                    // Stop consuming invalid double characters
                    break;
                }
                else {
                    iss >> dummy; // Consume invalid double characters
                }
            }
            continue;
        }
        cout << num << endl;
    }
    return 0;
}

---

Output

 2.832
 1.3067
 1.678
 0.05

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