Liskov substitution principle The Liskov Substitution Principle Open/Closed Principle 开闭原则 Software entities (e.g. classes) should be open for extension, but closed for modification. I.e. such an entity can allow its behavior to be modified without altering its source code. 软件实体(例如类)...
"""# ✅, meets SRPdefsaveOrder(order:Order):pass# ❌, Violate for SRP. Because there will be different type clients to use this class# and there will be different reasons to modify this classdefexportOrderAsHtml():pass 2. Open-Closed Principle (OCP) 开闭原则 定义 Each software entit...
软件实体(例如类)应对扩展是开放的,但对修改是封闭的。也就是说,这样的实体可以允许在不改变其源代码的情况下修改其行为。 为什么 通过最小化对现有代码的修改来提高可维护性和稳定性 怎么做 编写可以扩展的类(而不是可以修改的类) 只暴露需要更换的活动部分,隐藏其他所有部分。 相关资源 Open Closed Principle T...
多继承少修改,OCP(Open-Closed Principle)开闭原则。使用继承来改变,体现个性。比如杀马特类继承自人类,具有理发的方法,人类理发的方法都比较符合大众审美,但是杀马特类决定这个方法不好,自己要个性化,这个时候就不能去修改人类的理发方法,而是在杀马特类重新定制自己的理发方法,避免影响其他继承自人类的类的理发方法。 ...
(1)SRP-The Single Responsibility Principle(单独职责原则)- 一个类应该有且只有一个理由去改变。 (2)OCP-The Open Closed Principle(开闭原则)- 一个类应该可以在不修改的前提下扩展类的行为。 (3)LSP-The LisKov Substitutable Principle(LisKov可替换原则)- ...
()functions in the class, we'd be violating the single responsibilityprinciple. If we created a function that took a value that represented whether to print to XML or to DB, we'd be hard-coding a set of devices and thus be violating the open closedprinciple. The best way to do this ...
The software exhibits the open-closed principleWhereas the open-closed principle based on inheritance alone led to poor information hiding, the DCI style maintains the integrity of both the domain classes and the roles. Classes are closed to modification but are opened to extension through injection...
Open/closed principle Open / close principle in functional programming FantasyLand JavaScript specification Setoid algebra Ord algebra The expression problem Liskov substitution principle This OOP method stinks Our FP function smells like roses In FP contracts don't lie Duck typing What can go wrong wi...
A class should be open for extension, but closed for modification. Objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program. No client should be forced to depend on methods it does not use. Many client-specific interfaces are ...
Open-Closed Principle Liskov Substitution Principle Interface Segregation Principle Dependency Inversion Principle Summary Understanding MVC MVP MVVM and Clean Arch Patterns MVC (Model View Controller) MVP (Model View Presenter) MVVM Clean Architecture Pattern Understanding the layers of Clean Architecture Summa...