How can I implement the strategy pattern in my code?

How can I implement the strategy pattern in my code?

The strategy pattern allows you to define a family of algorithms, encapsulate each one, and make them interchangeable. What programming language are you using?

I'm using Python. Can you provide a code example?

Sure! Here's a simple example:

class Strategy:
    def execute(self):
        pass

class ConcreteStrategyA(Strategy):
    def execute(self):
        return "Strategy A"

class ConcreteStrategyB(Strategy):
    def execute(self):
        return "Strategy B"

class Context:
    def __init__(self, strategy: Strategy):
        self._strategy = strategy

    def set_strategy(self, strategy: Strategy):
        self._strategy = strategy

    def execute_strategy(self):
        return self._strategy.execute()

# Usage
context = Context(ConcreteStrategyA())
print(context.execute_strategy())  # Output: Strategy A
context.set_strategy(ConcreteStrategyB())
print(context.execute_strategy())  # Output: Strategy B

What are the benefits of using the strategy pattern?

The strategy pattern promotes flexibility and reusability. It allows you to change algorithms at runtime and adhere to the Open/Closed Principle, making your code easier to maintain.