Function get_value

example/cacheHierarchy/fkYAML/node.hpp:13964–13978

            detail::conjunction<std::is_default_constructible<ValueType>, detail::negation<std::is_pointer<T>>>::value,
            int> = 0>
    T get_value() const noexcept(
        noexcept(std::declval<const basic_node&>().template get_value_impl<ValueType>(std::declval<ValueType&>()))) {
        // emit a compile error if T is either a reference, pointer or C-style array type.
        static_assert(
            !std::is_reference<T>::value,
            "get_value() cannot be called with reference types. "
            "You might want to call one of as_seq(), as_map(), as_bool(), as_int(), as_float() or as_str().");
        static_assert(
            !std::is_array<T>::value,
            "get_value() cannot be called with C-style array types. You might want to call get_value_inplace().");

        auto ret = ValueType();
        resolve_reference().get_value_impl(ret);
        return ret;
    }

    /// @brief Get the node value object converted into a given type. The conversion result is filled into `value_ref`.
    /// @tparam T A compatible value type.