Q: What is virtual function?A: A virtual function or virtual method is a function or method whose behavior can be overridden within an inheriting class by a function with the same signature. This concept is an important part of the polymorphism porti…

Constructors/Destructors. 我们都知道,在C++中建立一个类,这个类中肯定会包括构造函数.析构函数.复制构造函数和重载赋值操作:即使在你没有明确定义的情况下,编译器也会给你生成这样的四个函数.例如以下类: class CTest { public: CTest(); // 构造函数 Constructor ~CTest(); // 析构函数 Destructor CTest(const CTest &); // 拷贝构造函数 Copy Constructor. CTest…

Question Key words Anwser A assignment operator abstract class It is a class that has one or more pure virtual functions. assignment & initialization constructed -> change value ,Same time Assignment changes the value of the object that has already…

Q: What is a class? A: A class is an expanded concept of a data structure: instead of holding only data, it can hold both data and functions. Q: What are the differences between a C++ struct and C++ class? A: The default member and base class access…

Q. What's the process and threads and what's the difference between them? A.  A process is an executing program. One or more threads run in the context of the process.  It has a primary thread. A thread is the basic unit to which the operating system…

Q: What is a dangling pointer? A: A dangling pointer arises when you use the address of an object after its lifetime is over. This may occur in situations like returning addresses of the automatic variables from a function or using the address of the…

Q: What is the difference between new/delete and malloc/free? A: Malloc/free do not know about constructors and destructors. New and delete create and destroy objects, while malloc and free allocate and deallocate memory. Q:What is difference between…

long long ago , i think if i want to improve my english especially computer english . i must do so mucn things like read some professional book and listen some professional vedio.but recently, i found out it's wrong. at the beginning, i must use engl…

模板模式和策略模式的区别: 模板方法模式的主要思想:定义一个算法流程,将一些特定步骤的具体实现.延迟到子类.使得可以在不改变算法流程的情况下,通过不同的子类.来实现“定制”流程中的特定的步骤. 策略模式的主要思想:使不同的算法可以被相互替换,而不影响客户端的使用. 简单说:就是类似于C语言的面向过程,然后某一个步骤有两种实现方式,分别继承当前类. // abstract_class.h #ifndef ABSTRACT_CLASS_H #define ABSTRACT_CLASS_H #incl…

This is a list of questions I have gathered from other sources and created myself over a period of time from my experience, many of which I felt where incomplete or simply wrong.  I have finally taken the time to go through each question and correct…

“Invalid configuration file. File "I:/My Virtual Machines/Windows XP english Professional/Windows XP Professional.vmx" was created by a VMware product with more features than this version of VMware Workstation and cannot be used with this versio…

Q1:Why are you interested in working for our company?为什么有兴趣在我们公司工作?A1:Because your company has a good sales record. 因为你们公司有良好的销售记录 .A2:Because your operations are global, so I feel I can gain the most from working in this kind of environment.因为你们公司的运…

I was lucky to work in a foreign company, Here is an overview of the interview test : 1.Because of the very high open -loop voltage gain of the op-amp,the output is driven into positive saturation(close to+V)when the sample voltage goes slightly abov…

https://www.zhihu.com/question/19666878 1.how do you handle failure? I have always lived by the maxim that nobody is perfect, so I am relatively comfortable taking responsibility for my shortcomings. My approach is to figure out what I could change t…

If you are using React or learning React, you must have heard of the term “Virtual DOM”. Now what is a Virtual DOM, and why does React use it? Real DOM First things first, DOM stands for “Document Object Model”. The DOM in simple words represents the…

初学React,其中一个很重要的概念是虚拟DOM,看了一篇文章,顺带翻译一下. If you are using React or learning React, you must have heared of the term `Virtual DOM`. Now what is Virtual DOM and why does react use it? 如果你正在用或者学习React,你一定听过虚拟DOM这个词儿.那什么是虚拟DOM? React为啥要用它呢? Real DOM First…

http://www.hjenglish.com/new/p581292/ vocabulary endeavour [ɪn'devər] relevant ['reləvənt] , efficient [ɪ'fɪʃnt] motivation , motivate, persistance phrase [freɪz] System analysis, trouble shooting and provide software support sb endevaour to do sth 5…

Today is Monday, April 28. I get a telephone call from Morgan Stanley in Shanghai. My examiner is a man, whose English is good. By the way, he is a Chinese. So he can understand my poor English. I was very nervous at the beginning, and I cannot follo…

出自:https://github.com/huihut/interview Github    |    Docsify 简体中文    |    English 关于 本仓库是面向 C/C++ 技术方向校招求职者.初学者的基础知识总结,包括语言.程序库.数据结构.算法.系统.网络.链接装载库等知识及面试经验.招聘.内推等信息. 侧边目录支持方式:Docsify 文档.Github + TOC 导航(TOC预览.png) 保存为 PDF 方式:使用 Chrome 浏览器打开 Docsify 文…

http://www.careerride.com/Swing-AWT-Interview-Questions.aspx   Swing interview questions and answers for freshers and experienced candidates. These interview questions and answers on Swing will help you strengthen your technical skills, prepare for t…

http://codeforces.com/contest/738/problem/A Polycarp has interviewed Oleg and has written the interview down without punctuation marks and spaces to save time. Thus, the interview is now a string s consisting of n lowercase English letters. There is…

Bridge Pattern, Composite Pattern, Decorator Pattern, Facade Pattern, COR Pattern, Proxy Pattern, template Pattern, MVC. Updated with the explanation of Composite pattern, Decorator Pattern and Template Pattern. Design Pattern Interview Question - Pa…

class Organ { public virtual void Intro() { Console.WriteLine("I'm a organ."); } public string GetOrgan() { return "Cut"; } } class Eye:Organ { public override void Intro() { Console.WriteLine("I'm an eye"); } public new stri…

1.3.2.2 IP Address Requirements Before starting the installation, you must have at least two interfaces configured on each node: One for the private IP address and one for the public IP address. 1.3.2.2.1 IP Address Requirements for Manual Configurat…

UNIX or Linux operating system has become default Server operating system and for whichever programming job you give interview you find some UNIX command interview questions there. These UNIX command interview questions are mostly asked during Java d…

In this tutorial we will discuss about different types of questions that can be used in a Java interview, in order for the employer to test your skills in Java and object-oriented programming in general. In the following sections we will discuss abou…

2012.12.26 Hi all, How are you doing? Merry post-Christmas and happy upcoming New year!! I wish you had a good one this year. Our one week one time English corner is coming back! Are you excited to hear that. I know that you cannot wait to join us. Y…

Part 1 http://techmytalk.com/2014/01/24/java-interview-reference-guide-part-1/ Posted on January 24, 2014 by Nitin Kumar JAVA Object Oriented Concepts Java in based on Object Oriented concepts, which permits higher level of abstraction to solve any p…

How do you learn English very fast? Every week, I get emails about this topic.   Typically, someone writes and wants to know how they can speak fluently in only 2 or 3 months.  Usually they are in a hurry because they have a test or an interview comi…

1.Tell me about yourself? My name is xxx,i 'm from xxx. now , I am a postgratuation and my major subject is computer application. I worked at shanghai kinglong Internet of things company last year,I got a lot of innovate knowledge from my work about…