Function tuple_to_string_impl

src/ifcparse/rocksdb_map_adapter.h:129–134

template<typename Tuple, std::size_t... Is>
std::string tuple_to_string_impl(const Tuple& t, std::index_sequence<Is...>) {
    std::ostringstream oss;
    // Unpack the tuple; add a pipe before each element except the first.
    ((oss << (Is == 0 ? "" : "|") << std::to_string(std::get<Is>(t))), ...);
    return oss.str();
}

template<typename... Ts>
std::string key_to_string(const std::tuple<Ts...>& key) {