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

When working with embedded targets, it's essential to serialize and deserialize data structures like `std::map` effectively. This enables you to store and retrieve data in a compact format, suitable for environments with limited resources. Here's a guide on how to accomplish that in C++.

Serialization and Deserialization of std::map

Serialization is the process of converting a data structure into a format that can be easily stored or transmitted, while deserialization is the reverse process. Below is an example of how to serialize and deserialize a `std::map` using a simple string-based approach.


            #include <iostream>
            #include <map>
            #include <sstream>
            
            std::string serialize(const std::map<int, std::string> &m) {
                std::ostringstream oss;
                for (const auto &pair : m) {
                    oss << pair.first << ',' << pair.second << ';';
                }
                return oss.str();
            }
            
            std::map<int, std::string> deserialize(const std::string &str) {
                std::map<int, std::string> m;
                std::istringstream iss(str);
                std::string pair;
                while (std::getline(iss, pair, ';')) {
                    std::istringstream pair_stream(pair);
                    int key;
                    std::string value;
                    if (std::getline(pair_stream, value, ',') && pair_stream >> key) {
                        m[key] = value;
                    }
                }
                return m;
            }
            
            int main() {
                std::map<int, std::string> data = { {1, "one"}, {2, "two"}, {3, "three"} };
                std::string serialized = serialize(data);
                std::cout << "Serialized: " << serialized << std::endl;
                
                std::map<int, std::string> deserialized = deserialize(serialized);
                for (const auto &pair : deserialized) {
                    std::cout << pair.first << ": " << pair.second << std::endl;
                }
                return 0;
            }

serialization deserialization std::map C++ embedded systems data storage

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

Serialization and Deserialization of std::map

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

Serialization and Deserialization of std::map

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