How do I serialize and deserialize contents with std::unordered_map for embedded targets?

Serialization and deserialization of data structures like std::unordered_map in C++ can be crucial for embedded systems where memory and processing power are limited. Below, you'll find a comprehensive guide and example of how to achieve this, focusing on efficiency and simplicity.

C++, serialization, deserialization, std::unordered_map, embedded systems, memory efficiency, data structures

This guide covers the process of serializing and deserializing std::unordered_map in C++, particularly for embedded systems, with a focus on efficient use of resources.


        #include <iostream>
        #include <unordered_map>
        #include <string>
        #include <sstream>

        // Function to serialize an unordered_map
        std::string serialize(const std::unordered_map<:string int>& map) {
            std::ostringstream oss;
            for (const auto& pair : map) {
                oss << pair.first << ":" << pair.second << ";";
            }
            return oss.str();
        }

        // Function to deserialize a string into an unordered_map
        std::unordered_map<:string int> deserialize(const std::string& data) {
            std::unordered_map<:string int> map;
            std::istringstream iss(data);
            std::string pair;
            while (std::getline(iss, pair, ';')) {
                if (!pair.empty()) {
                    auto delimiter_pos = pair.find(':');
                    std::string key = pair.substr(0, delimiter_pos);
                    int value = std::stoi(pair.substr(delimiter_pos + 1));
                    map[key] = value;
                }
            }
            return map;
        }

        int main() {
            std::unordered_map<:string int> myMap = {{"apple", 1}, {"banana", 2}, {"orange", 3}};
            std::string serialized = serialize(myMap);
            std::cout << "Serialized: " << serialized << std::endl;

            auto deserialized = deserialize(serialized);
            for (const auto& pair : deserialized) {
                std::cout << pair.first << ": " << pair.second << std::endl;
            }
            return 0;
        }

How do I serialize and deserialize contents with std::unordered_map for embedded targets?

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How do I serialize and deserialize contents with std::unordered_map for embedded targets?

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