Method clone

include/chaiscript/utility/json.hpp:125–131

    struct Internal {
      template<typename T>
        auto clone(const std::unique_ptr<T> &ptr) {
          if (ptr != nullptr) {
            return std::make_unique<T>(*ptr);
          } else {
            return std::unique_ptr<T>(nullptr);
          }
        }

      Internal( double d ) : Float( d ), Type(Class::Floating) {}
      Internal( int64_t l ) : Int( l ), Type(Class::Integral) {}