A design pattern goes to the supermarket by Kaya Weers

Design patterns in software development: learn how the Template Method, Factory Method, Adapter, Command, Observer, Strategy, and Facade patterns solve common problems at a supermarket with Bobby and Billy.

Key takeaways

Design patterns are solutions to common problems that occur during software development.
The example used is a supermarket and two friends, Bobby and Billy, who go shopping and order bread.
The pattern used is the Template Method, where the steps of preparing bread are defined in a superclass, and the subclasses override the specific steps.
The Factory Method is used to create different types of bread, and the Adapter is used to convert the interface between the Spanish and English languages.
The Command Pattern is used to encapsulate the request in a standalone object, the note.
The Observer Pattern is used to notify the observers of the update in the stock.
The Strategy Pattern is used to define a family of algorithms, in this case, the different ways to prepare bread.
The Facade Pattern is used to provide a simplified interface to the client.
Design patterns are not code, but rather a concept, a strategy to solve a problem.
The book “Design Patterns: Elements of Reusable Object-Oriented Software” by the Gang of Four provides a comprehensive guide to design patterns.
Design patterns are used to gain knowledge about how to solve a problem, how to look at a problem.
They can be used to simplify the code and make it easier to understand.
Design patterns are not a panacea, but rather a tool to help solve common problems.
It’s important to learn about design patterns and understand how to use them in your own code.

A design pattern goes to the supermarket by Kaya Weers

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