Overload.h

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#pragma once

namespace open3d {
namespace utility {

template <typename... Ts>
struct Overloaded;

template <typename T1, typename... Ts>
struct Overloaded<T1, Ts...> : T1, Overloaded<Ts...> {
    Overloaded(T1 t1, Ts... ts) : T1(t1), Overloaded<Ts...>(ts...) {}

    using T1::operator();
    using Overloaded<Ts...>::operator();
};

template <typename T1>
struct Overloaded<T1> : T1 {
    Overloaded(T1 t1) : T1(t1) {}

    using T1::operator();
};

template <typename... Ts>
Overloaded<Ts...> Overload(Ts... ts) {
    return Overloaded<Ts...>(ts...);
}

}  // namespace utility
}  // namespace open3d