What is object-oriented programming

What is object-oriented programming?

Object-oriented programming (English: Object-oriented programming, abbreviation: OOP), that is, object-oriented programming is a programming model with object concepts, and it is also an abstract policy for program development. It may contain data, properties, code and methods. Objects refer to instances of classes.

It takes the object as the basic unit of the program and encapsulates the program and data in it to improve the reusability, flexibility and scalability of the software. The program in the object can access and frequently modify the data associated with the object. In object-oriented programming, computer programs are designed as objects that are related to each other.

Object-oriented programming can be regarded as an idea that contains various independent and mutually calling objects in the program. This is exactly the opposite of traditional thinking: traditional programming advocates treating the program as a series of A collection of functions, or simply a series of instructions given to the computer.

Every object in object-oriented programming should be able to accept data, process data and communicate data to other objects, so they can be regarded as a small "machine", that is, an object.

It has been proven that object-oriented programming promotes the flexibility and maintainability of programs and is widely used in large-scale project design. In addition, proponents claim that object-oriented programming is easier to learn than previous practices because it allows people to design and maintain programs more easily, making programs easier to analyze, design, and understand. Opponents deny this in some quarters.

When we refer to object-oriented, it does not only refer to a programming method. It is more of a program development method. In this regard, we must know more about object-oriented system analysis and object-oriented design (Object Oriented Design, referred to as OOD). Many popular programming languages ​​are object-oriented, and their style is to create instances from objects.

Important object-oriented programming languages ​​include Common Lisp, Python, C, Objective-C, Smalltalk, Delphi, Java, Swift, C#, Perl, Ruby and PHP, etc.

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