Function key_to_string

src/ifcparse/rocksdb_map_adapter.h:107–113

template <typename KeyT>
std::string key_to_string(const KeyT& key) {
    if constexpr (std::is_same_v<KeyT, std::string>) {
        return key;
    } else {
        return std::to_string(key);
    }
}

// Convert from a string to a key. For non-string types, we assume numeric keys.
template <typename KeyT, typename std::enable_if<!is_std_tuple<KeyT>::value, int>::type = 0>