Solutions

Use these to check your work after you’ve tried the exercises. If something differs, treat it as a debugging opportunity.

Exercise 1

Binding:

m.def("scale", &scale, py::arg("x"), py::arg("factor") = 1.0);

Exercise 2

std::pair<double,double> minmax(const std::vector<double>& v) {
    auto [mn, mx] = std::minmax_element(v.begin(), v.end());
    return {*mn, *mx};
}

Exercise 3

if (v.empty()) throw std::runtime_error("minmax: empty input");