What is the strategy pattern used for?

What is the strategy pattern used for?

In computer programming, the strategy pattern (also known as the policy pattern) is a behavioral software design pattern that enables selecting an algorithm at runtime. Instead of implementing a single algorithm directly, code receives run-time instructions as to which in a family of algorithms to use.

How do you develop a Strategy pattern?

In Strategy pattern, we create objects which represent various strategies and a context object whose behavior varies as per its strategy object….Design Patterns – Strategy Pattern

1. Create an interface.
2. Create concrete classes implementing the same interface.
3. Create Context Class.

How to design an algorithm using strategy design pattern?

Capture the abstraction in an interface, bury implementation details in derived classes. Inherit Concrete strategy classes from Abstract Strategy interface. Create an Algorithm class and loosely bind Strategy with it i.e. Create a pointer/ reference of Abstract Strategy in algorithm class.

What is the purpose of a strategy pattern?

In computer programming, the strategy pattern (also known as the policy pattern) is a behavioral software design pattern that enables selecting an algorithm at runtime. Instead of implementing a single algorithm directly, code receives run-time instructions as to which in a family of algorithms to use. Strategy lets…

How are Strategy1 and Strategy2 classes implemented in UML?

The Strategy1 and Strategy2 classes implement the Strategy interface, that is, implement (encapsulate) an algorithm. The UML sequence diagram shows the run-time interactions: The Context object delegates an algorithm to different Strategy objects.

How is the strategy pattern used in validation?

The validation algorithms (strategies), encapsulated separately from the validating object, may be used by other validating objects in different areas of the system (or even different systems) without code duplication . Typically, the strategy pattern stores a reference to some code in a data structure and retrieves it.