grokking object oriented design interview

by the program, the value of the inside does not know when will be overwritten If you pass a class, struct, and so on, the parameters and return values are passed through some space in memory.The reference is converted into a pointer operation.Constructor: The same as the class name, no return value, implementation of the class member initialization. It is best to initialize the initial value list, and if the function body is initialized, the data member has completed the default initialization

(); T3.sayhi ();Obj3 inherits Obj2,obj2 inheritance Obj1. When our Obj3 instance object accesses Sayhi, we go to Obj3 's instance object and look for the Sayhi method (not found), then go to the OBJ3 prototype (not found), then go to the parent OBJ2 prototype (not found), and then go to the OBJ1 prototype (found). The path to finding is the prototype chain. This is a learning record, not a tutoria

(I saw an article about the relationship between object-oriented design and database design. I think it is very good. I will post it again .) There is no data stream in object-oriented systems. The business is completed by object

Labels: OCP Java design mode Object-Oriented Design1. Single Responsibility Principle The core idea of a single responsibility principle is: every object in the system should have only one independent responsibility, and all objects are concerned with the completion of their own responsibilities. SRP single Responsibil

I recently read a Demo of Native 2d ON THE Unity3d official website and found that Unity3d is a pure object-oriented game engine, I was amazed at the degree of object-oriented. Normally, objects work independently. For example, in an ordinary ARPG game, a character has weapons and can attack monsters, We can encapsulat

I have been doing program design for the object-oriented design model for a short time. I recently went to several companies for an interview and was asked about the object-oriented

method to grasp complexity is to break it into smaller parts when designing a complex software system, and then refine them separately. AlgorithmDecomposition represents each module in the system as the main step in a general process. Object-oriented decomposition is used to break down the system based on the key abstraction in the problem field. The algorithm decomposition method highlights the sorting o

Sharing (six principles of object-oriented design model) and six design models I recently read an article titled "Please call me your first brother" on the six principles of the design mode. It is simple, easy to understand and can't help but repost and share it with me !!

What is the data Access object pattern? The data Access object design pattern describes how to create an object that provides transparent access to any data. Application problem and solution of data access object pattern For those who have also learned PHP and MySQL, the d

Seven main object-oriented design principles Opening and closing principles : In the face of demand, changes to the program is done by adding new code , rather than changing the original title dependency Reversal Principle : High-level modules should not rely on the underlying modules, two should be dependent on the abstract, the abstract should not rely on the

I. Design Principles1. Dependency inversion principle (DIP) High-level modules (stability) should not depend on low-level modules (changes), both of which should depend on abstraction.Abstract (stable) should not depend on implementation details (changes), and implementation details should depend on abstraction. 2. Open and closed principle (OCP) Class modules should be extensible, but cannot be modified; open to extensions and closed to changes

One, the distinction of the concept Some people confuse object-oriented database design (i.e. database schema) with object-oriented database management system (OODBMS) theory. In fact, the former is a database user-defined database mode of thinking, the latter is the idea o

In the previous article, we initially learned about the OO design. The most unique feature of the OO design is the way he views the needs. In this way, we do not need to rush to determine which processes the software needs to implement, which functional points should be designed, and which pictures should be made. Instead, we need to focus on some more basic concepts in the requirements. First, develop some

package, it will affect all classes in the package, but it will not affect other packages. Package coupling principle No-ring dependency principle (Acyclic Dependencies Principle, ADP) The package dependency does not allow loops. Stable-Dependencies Principle, SDP) Dependency in a stable direction Stable-abstractions principle (SAP) The abstraction level of the package should be consistent with its stability. Old ti

The advanced realm of learning JavaScript is to use object-oriented methods to call JavaScript. A new article: Comparison of strings in JavaScript The Application of face object is quite extensive. It has long been used in desktop programming and has mature applications, such as C ++, Java, and C. The emergence of Web programming is much later, so that the curren

clause 32: Make sure your pubilc inherits the is-a relationship of plastic mold Make sure public inheritance models "Is-a" one of the most important rules for –c++ (OOP) object-oriented programming is that public inheritance (open inheritance) means "is-a" (a) relationship. – If you make class D ("derived") Inherit class B ("Base") as public, you tell the compiler that each

tree-like Java object to a database, and vice versa. The core of this work is how to accomplish this work with minimal performance loss. The EJB framework provides such an object persistence mechanism. We will discuss this mechanism in this article, but first of all we have a comprehensive understanding of the EJB architecture. Enterprise-Class JavaBeans (EJB) EJB technology can be defined as this: it is a

define a large number of access methods in the public interface. A large number of access methods means that the relevant data and behavior are not centrally stored. (15) Be more careful with classes that contain too much communication behavior. P31 Another manifestation of this problem is the creation of many get and set functions in the public interface of the classes in your application. (16) In an application composed of an object-

C # overview of the object-oriented design model (1): Face-to-Face Design Model and mongo.zip Lecture content: this training course introduces the basic concepts and principles of object-oriented

1. Creation Mode: Singleton: Solves the number of instantiated objects, such as factories and object pools in the abstract factory. In addition to Singleton, other creation modes solve the coupling relationship brought by new. Abstract Factory: creates a series of interdependent objects and can change the series at runtime. Factory method: create a single object, which is used in abstract factory. P