How do I serialize and deserialize contents with std::map in performance-sensitive code?

This document provides a detailed guide on how to efficiently serialize and deserialize the contents of a std::map in performance-sensitive C++ code.

Serialization, Deserialization, std::map, C++, Performance-sensitive, Code Optimization

#include <iostream> #include <map> #include <sstream> #include <string> // Function to serialize std::map std::string serialize(const std::map<std::string, int>& m) { std::ostringstream oss; for (const auto& pair : m) { oss << pair.first << ":" << pair.second << ";"; } return oss.str(); } // Function to deserialize std::map std::map<std::string, int> deserialize(const std::string& str) { std::map<std::string, int> m; std::istringstream iss(str); std::string pair; while (std::getline(iss, pair, ';')) { if (pair.empty()) continue; size_t colonPos = pair.find(':'); std::string key = pair.substr(0, colonPos); int value = std::stoi(pair.substr(colonPos + 1)); m[key] = value; } return m; } int main() { std::map<std::string, int> myMap { {"One", 1}, {"Two", 2}, {"Three", 3} }; std::string serialized = serialize(myMap); std::cout << "Serialized: " << serialized << std::endl; std::map<std::string, int> deserialized = deserialize(serialized); for (const auto& pair : deserialized) { std::cout << pair.first << ": " << pair.second << std::endl; } return 0; }

Serialization Deserialization std::map C++ Performance-sensitive Code Optimization

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