Strategy pattern - Behavioral

• Define a family of algorithms, encapsulate each one, and make them interchangeable.
• Strategy lets the algorithm vary independently from clients that use it.
• Group several algorithms in a single module to provide alternatives.
• Also known as Policy pattern

 

Where to use ?

• Encapsulate various algorithms to do more or less the same thing.
• Need one of several algorithms dynamically.
• The algorithms are exchangeable and vary independent
• To avoid exposing complex and algorithm-specific structures.
• To reduce multiple conditional statements.