Object-Oriented programming is one of the current paradigms fur' producing quality software, providing that the object-onented principles are respected and fulfilled. One principle is the interface separation, which states that clients of any given software must not be forced to depend on interfaces...
primary mechanism for object-to-object communication. Hiding internal state and requiring all interaction to be performed through an object's methods is known as data encapsulation — a fundamental principle of object-oriented programming. 方法动手术在对象的内部状态并且起主要机制作用对于对象对对象通信。
The Dependency Inversion Principle (DIP) is one of the five SOLID principles of object-oriented programming (OOP), first introduced by Robert C. Martin. It states: High-level modules should not import anything from low-level modules. Both should depend on abstractions (e.g., interfaces...
In object-oriented programming, the open/closed principle states "software entities (classes, modules, functions, etc.) should be open for extension, but closed for modification"; that is, such an entity can allow its behaviour to be extended without modifying its source code.The name open/clos...
The Single Responsibility Principle is the first principle of SOLID principles. It is the fundamental principle of object-oriented programming that determines how we should design classes. The Single Responsibility Principle states that: Each software module should have one and only one reason to change...
The preceding rules cannot be controlled by the compiler or limited by object-oriented programming languages. Instead, you must carefully consider the design of class hierarchies and of types that may be subclassed in the future. Failing to do so risks the creation of subclasses that break rules...
The Liskov Substitution Principle of object oriented design states: In class hierarchies, it should be possible to treat a specialized object as if it were a base class object. The basic idea here is very simple. All code operating with a pointer or reference to the base class should be com...
In the realm of object-oriented programming, writing code that is both flexible and easy to maintain is paramount. The Dependency Inversion Principle (DIP) is one of the five SOLID principles of object-oriented design and stands as a cornerstone for achieving these objectives. In this blog post...
Object-oriented programming languages provide some unique features like inheritance, use of class & objects, polymorphism, encapsulation, data abstraction. Most of these languages like C++, Java, Python, etc. allow them in various forms. Inheritance is mainly used to implement the same code multiple...
Let's assume we need an object to keep an email message. We are going to use the IEmail interface from the below sample. At the first sight everything looks just fine. At a closer look we can see that our IEmail interface and Email class have 2 responsibilities (reasons to change)....