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C/c ++ interview Summary (2) Interview Summary 4. Deep copy and light copy (1) When will the copy function be used? An object is passed in a function as a value (that is, as an input parameter) An object is returned from a function by passing values (that is, as the return value) One object needs to be initialized through another object (2) Whether to customize the copy Function If you do not define a copy

PHP interview questions. Basic questions about PHP interview questions 1. What methods do you use to solve the traffic problems for websites with high traffic volumes? First, check whether the server hardware is sufficient to support the current traffic. 1. What methods do you use to solve the traffic issue for websites with large traffic volumes? First, check whether the server hardware is sufficient to s

Memory issuesOne: Cell phone memory capacity The latest Apple phone iphone6s (plus) now has 2GB of running memory. IPhone5, IPhone5S, and IPhone6 (plus) run memory at 1GB. IPhone4 and Iphone4s run memory at 512MB. Two: App running memory It is recommended not to exceed 10M. If the user only runs a program memory is used can be around 30M. But the odds are almost impossible. Generally more than 10M will be memory warning L1 system will kill some of the unused view Test

I may ask some questions about the constructor during the interview ~, Constructor interview The constructor is also a frequently asked question by the interviewer. We know that the initialization of a class depends on it. Below are a few small questions. Q: I can see that there is usually a BasePage page in a Web project, where the constructor performs permission verification, Why. A: Now that this is don

Asp. net interview questions and asp.net interview 1. Differences between ref and out 2. Three a labels have no id, no name, and no class. How to select the second a label and use jquert to select 3. What is the difference between a set, a generic set, and an array? 4. What is the difference between string and stringbuilder? The string object cannot be changed. Every time you use the string class, you must

100 Interview Questions for Software Developers Hiring smart software developers is not easy.If you're not careful you might end up hiring a bunch of moronicMandrills, like I did last year. And you don't want that. Trust me.Stand-up meetings are very hard to do in a tree. The key is to askChallenging questionsThat enable you to distinguish the smart software developers fromMoronic mandrills. And to help you with that, I decided to publish myPrivate l

Hadoop interview questions (1) and hadoop interview questions I. Q : 1. Briefly describe how to install and configure an apache open-source version of hadoop. You only need to describe it. You do not need to list the complete steps and the steps are better. 1) install JDK and configure environment variables (/etc/profile) 2) disable the Firewall 3) configure the hosts file to facilitate hadoop access throug

Several common js interview questions and js interview 1. About the number type conversion in "+" and "-" Var a = ''+ 3; // try to convert 3 to the string var B = 4; console. log (typeof a); console. log (a + B); console. log (a-B); // try to convert the string to numbervar foo = "11" + 2 + "1 "; // Add a string '1' and subtract a string '1. log (foo); console. log (typeof foo ); 2. De-duplication of js Ar

Java interview-Hibernate summary, java interview-hibernate 1. Hibernate Retrieval Method Ø navigation object graph retrieval (navigation to other objects based on the loaded objects .) OID retrieval (the object is retrieved Based on the OID of the object .) Ø HQL search (using an object-oriented HQL Query Language .) Ø QBC retrieval (using QBC (Qurey By Criteria) API to retrieve objects. QBC/QBE offline/on

Baidu interview questions to find an array that meets the conditions, Baidu interview questions ArrayGiven the sum of the Functions d (n) = n + n, n is a positive integer, for example, d (78) = 78 + 7 + 8 = 93. In this way, this function can be regarded as a generator, for example, 93 can be regarded as generated by 78.Define number A: Number A cannot find A number B can be created by d (B) = A, that is, A

Android interview questions (3) and android interview questions 1. Describe the lifecycle of an Activity. Activity lifecycle methods include:OnCreate (), onStart (), onReStart (), onResume (), onPause (), onStop (), onDestory ();Visible life cycle: from onStart () to onStop () called by the System ()Foreground lifecycle: From onResume () to onPause () called by the System () 2. How to enable

Android interview questions (2) and android interview questions 1. What is the difference between int and Integer? Java provides two different types: The reference type and the original type (or the built-in type ). Int Is the original data type of java, and Integer is the encapsulation class provided by java for int. Java provides encapsulation classes for each original type. BooleanBoolean charac

JAVA advanced interview Summary-JVM, java interview-jvm 1. Sun HotSpot VM is a self-embedded Virtual Machine in JDK and Open JDK. It is also the most widely used Java virtual machine. 2. JVM Memory Distribution Program counter: it is a small memory space and can be seen as the row number indicator of the bytecode executed by the current thread. The basic functions of the program, such as branch, loop, jum

Alibaba frontend telephone interview and Alibaba telephone interview 1. What are the two time functions of js? SetTimeOut ('function', time) % number of seconds after paused And setInterval ('function', time) % do not stop executing a line of code for a certain period of time 2. What is argument? What is the difference with this? 3. What is the function of closure? 4. How to Use js to implement a caro

Interview point: String strcpy Function Analysis of C language interview questions 2I. Basic knowledge points Strcpy (character array 1, string 2) 1. strcpy this function uses the string terminator of the second parameter to determine whether the copy ends; 2. The strlen function obtains the string length,It does not contain the string Terminator.; 3. When using the strcpy function, be sure to note that the

Interview 49: Civil Servant interviewThe following is the implementation of the atoi function of offer. For this simple interview algorithm question, the interviewer often intends to examine the fault tolerance ability of our program, and examine the considerations of various aspects of the program during programming. The following is a program that imitates the author's algorithm. # Include The above is a

I will summarize some common android interview basic questions to see how many questions can you make? 1. What are several intent startup methods? Do you understand each meaning? Here, android123 reminds you that some intent tags include flag_activity_brought_to_front, flag_activity_clear_top, struct, struct, flag_activity_multiple_task, and flag_activity_new_task. For every meaning, you can read the SDK documentation and run it down so that yo

IOS interview questions (2) and ios interview questions 1. Q 1. Functions of readwrite, readonly, assign, retain, copy, and nonatomic attributes. 2. When to use delegate and Notification? Iii. Target-Action Mechanism 4. When is the loadView, viewDidLoad, and viewDidUnload of ViewController called? What should I do in the Custom ViewController functions? 5. What is the difference between # import and # incl

Android interview question 1, android interview question 1. What is intent in Android? A: You can switch between interfaces, including action and action data to connect the four components. 2. What are the advantages of using SAX to parse xml files? A: You do not need to call the entire document in advance, which consumes less resources. 3. When using Menu in android, you may need to override the follo

This is an interview with a GIS company in Guangzhou last week. First, the resume, the interview, the demonstration of your project, the computer, the two sides, three sides... tired. What do you know about GIS? This is not a good answer. I am confused. I asked Huang Tian. He said that he would give me a better answer in combination with MIS. GIS manages, analyzes, and applies spatial data and attribute