This would violate the interface segregation principle. Now, any shape you create must implement the volume method, but you know that squares are flat shapes and that they do not have volumes, so this interface would force the Square class to implement a method that it has no use of. We aim to unite ACG fans around the globe and help them as. Single-responsibility Principle (SRP) states:Ī class should have one and only one reason to change, meaning that a class should have only one job.įor example, consider an application that takes a collection of shapes-circles, and squares-and calculates the sum of the area of all the shapes in the collection.įirst, create the shape classes and have the constructors set up the required parameters.įor squares, you will need to know the length of a side: class Square QooApp is a professional platform specialising in Anime, Comics and Games (ACG) culture. In this article, you will be introduced to each principle individually to understand how SOLID can help make you a better developer. Adopting these practices can also contribute to avoiding code smells, refactoring code, and Agile or Adaptive software development. QooApp functions as both an Android game store and social hub for fans of geek culture. These principles establish practices that lend to developing software with considerations for maintaining and extending as the project grows. Not only does it offer apps, but it includes comments, posts, and news about the world of games for Android devices. It also includes spaces for its community. Note: While these principles can apply to various programming languages, the sample code contained in this article will use PHP. QooApp is an app from the APK store of the same name that specializes in games from Asia, although you can find just about everything on it.
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