State pattern Flutter

If you have a branching code with lots of ‘if and else’, then Strategy pattern is the best choice . With Spring Boot’s powerful dependency injection, Factory pattern comes to the rescue when different sub types of objects are needed.

Number Pattern in dart

Strategy Design Pattern is a type of behavioral design pattern that encapsulates a “family” of algorithms and selects one from the pool for use during runtime. The algorithms are interchangeable, meaning that they are substitutable for each other. The key idea is to create objects which represent various strategies.

The main difference is , the command does some action over the object. It may change the state of an object. While Strategy decides how to process the object . It encapsulates some business logic.

The idea behind the strategy pattern is that “algorithms can be selected at runtime.” (Wikipedia, Strategy Pattern) The pattern, in essence, is selecting the right strategy (or behavior) for solving a particular problem at runtime . Hence, it’s name.