Strategy Pattern
The Strategy Pattern is a behafvioral design pattern in object-oriented programming. It defines a family of algorithms, encapsulates each one, and makes them interchangeable. The pattern allows a client to choose and use an algorithm from a family of algorithms at runtime. It separates the algorithm from the client, making the algorithm’s implementation details hidden from the detail.
Explanation with Real World Example
Let’s consider a real-world example involving a navigation application that provides various routing options to users:
- Context (Navigation Application): The navigation applications is the context that requires different routing algorithms. It represents the client.
- Strategy (Routing Algorithms): The routing algorithms are the strategies. They encapsulate various methods to calculates notes, such as Shortest Route, Scenic Route and Avoid Traffic Route.
- Client’s Choice: The user of the navigation application can choose the routing strategy they prefer. For example, if they select Avoid Traffic Routhe the application employs that specific routing algorithm.
This real world example illustrates how the Strategy Pattern allows users to select a specific routing algorithm without needing to understand the inner workings of the algorithm or the application.
The Strategy Pattern is used in situations where multiple algorithms or strategies are available for a specific task, and you want to select and use one of them at runtime.
Design Patterns in Object-Oriented Programming (OOP)
Software Development is like putting together a puzzle. Object-oriented programming (OOP) is a popular way to build complex software, but it can be tricky when you face the same design problems repeatedly. That’s where design patterns come in.
Design patterns are like well-known recipes for common problems in software development. They’re not step-by-step instructions, but more like guidelines to help you solve these problems in a flexible and efficient way. These patterns gather the wisdom of the software development community, making it easier for developers to work together and create software that’s easy to maintain, adapt, and reuse.
Important Topics for the Design patterns in object-oriented programming
- Singleton Pattern
- Factory Method Pattern
- Abstract Factory Method Pattern
- Builder Pattern
- Adapter Pattern
- Proxy Pattern
- Decorator Pattern
- Composite Pattern
- Observer Pattern
- Strategy Pattern
- Command Pattern
- State Pattern
- Template Method Pattern
- Visitor Pattern
- Memento Pattern
- Conclusion