Design Patterns: Strategy

TL;DR

The strategy pattern is a design pattern that allows for the selection of different algorithms at runtime.

Transcript

hi welcome to visual studio tool box I'm your host Robert Greene and with me is filled to pixie hey Robert hey Phil how are you good good we're going to talk about another pattern today you're are going to talk about another pattern and we're going to talk about the strategy pattern you are cool all right follow the strategy pattern for a G pattern... Read More

Key Insights

• 👻 The strategy pattern allows for the selection of different algorithms or behaviors at runtime.
• 🤙 It enables dynamic behavior changes while calling the same method.
• 🧑‍💻 Examples of the strategy pattern include changing weather forecasts, log configurations, and dynamic pricing.

Questions & Answers

Q: What is the strategy pattern in design?

The strategy pattern is a design pattern that allows for the selection of different algorithms or behaviors at runtime, while using the same method. It enables flexibility in changing behavior without modifying the calling code.

Q: How is the strategy pattern different from simply choosing different options?

The strategy pattern goes beyond just choosing different options. It tracks the behavior chosen in the past and uses that information to determine the behavior for the current request. It is a more dynamic approach to changing behavior.

Q: Can you explain an example of the strategy pattern in action?

Sure, let's take the example of an e-commerce solution with dynamic pricing. The "get price" method uses different algorithms to calculate the price based on factors like time of day and percentage of seats sold. The calling code only needs to call the "get price" method, without worrying about the algorithm used.

Q: Are there any limitations or considerations when using the strategy pattern?

One consideration is to ensure that the code is programmed to an interface, allowing for different implementations to be used. It's important to think about the specific requirements of the problem and how the strategy pattern can be implemented to meet those needs.

Key Insights:

• The strategy pattern allows for the selection of different algorithms or behaviors at runtime.
• It enables dynamic behavior changes while calling the same method.
• Examples of the strategy pattern include changing weather forecasts, log configurations, and dynamic pricing.
• Implementing the strategy pattern requires programming to an interface and thinking about the specific problem requirements.

Summary & Key Takeaways

• The strategy pattern is a behavioral design pattern that enables the selection of different behaviors at runtime.

• The pattern allows for dynamically changing behavior while calling the same method.

• Examples of the strategy pattern include changing weather forecasts, log configurations, and dynamic pricing in an e-commerce solution.