How do I implement the strategy pattern in embedded devices with C++?

The Strategy Pattern is a behavioral design pattern that enables selecting an algorithm's implementation at runtime. In embedded systems using C++, it can help to dynamically change the behavior of an application without modifying its structure. The pattern typically involves defining a family of algorithms, encapsulating each one, and making them interchangeable through a common interface.

Implementation Example

#include #include // Strategy Interface class Strategy { public: virtual void execute() = 0; // Pure virtual function for execute }; // Concrete Strategy A class ConcreteStrategyA : public Strategy { public: void execute() override { std::cout << "Executing strategy A" << std::endl; } }; // Concrete Strategy B class ConcreteStrategyB : public Strategy { public: void execute() override { std::cout << "Executing strategy B" << std::endl; } }; // Context class Context { private: std::unique_ptr strategy; // Store a pointer to the strategy public: Context(std::unique_ptr strategy) : strategy(std::move(strategy)) {} void setStrategy(std::unique_ptr newStrategy) { strategy = std::move(newStrategy); } void executeStrategy() { strategy->execute(); } }; // Main function to demonstrate the pattern int main() { Context context(std::make_unique()); context.executeStrategy(); // Output: Executing strategy A context.setStrategy(std::make_unique()); context.executeStrategy(); // Output: Executing strategy B return 0; }

Strategy Pattern C++ Design Patterns Embedded Systems Runtime Behavior Algorithms