mahjong questions and answers

[Original] answers to frequently asked questions about the lightweight mobile instant messaging technology MobileIMSDK, mobileimsdk Statement:Currently, the MobileIMSDK is a self-developed open-source project and has been released. I have summarized some common problems related to the MobileIMSDK. I hope it will be useful to those who need it. Thank you. To communicate with the author, see the personal si

Interview Questions and answers for 40 Java sets and 40 Java Sets Provided by Beijing shangxuetang 1. JavaWhat is a collection framework? What are the advantages of a collection framework? Each programming language has a set. The original Java version contains several collection classes: Vector, Stack, HashTable, and Array. With the widespread use of collections, Java1.2 proposes a set framework that includ

Typical questions and answers from Oracle 1. Explanations of differences between cold backup and hot backup and their respective advantages answer: Hot Backup is applicable to databases in archive mode when the database is still working. Cold backup refers to the backup after the database is closed, applicable to all databases. The advantage of hot backup is that the database can still be used during Backup

For questions and answers about linux testing, be professional. -- Linux general technology-Linux technology and application information. For details, refer to the following section. 1. What is linux? 2. linux development history and common versions? 3. What are the advantages and disadvantages of linux? 4. What is the current linux application? 5. How to learn about linux? 6. How to partition and inst

function, and CURL can all achieve this. If PHP and Java are integrated, PHP has built-in this mechanism (If PHP and. NET integration. For example, $ foo = new Java ('java. lang. system ');5. CVS and SVN. SVN is known as the next generation of CVS and has powerful functions. However, CVS is a veteran with a high market share. I have been using SVN for a long time. The question is what tools are used. Well, this may require the following answers: CVS

developers to build better Web applications. DataList Datetime Output Keygen Date Month Week Time Color Number Range Email Url 8. What HTML4 tags are HTML5 discarded?HTML5 discarded some outdated, unreasonable HTML Tags: Frame Frameset Noframe Applet Big Center Basefront 9. What new APIs does the HTML5 standard provide?The application APIs provided by HTML5 are mainly: Media API Text

This article is about the most complete and detailed PHP surface questions (with answers), with a certain reference value, now share to everyone, the need for friends can refer to 1. What does __file__ mean? (5 points)The full path and file name of the file. If used in the include file, the include filename is returned. Since PHP 4.0.2, __file__ always contains an absolute path, and the previous version so

Php programmer interview questions and answers Class my_class { Function my_funct ($ my_param) { User_error ("please define me", E_ERROR ); } Function B () { Return 10; } } ?> A. Multiple inheritance B. Interface C. abstract method D. private method E. function overload)7. suppose a testclass class is defined. what is the

Answers to four questions about the shielded Cabling System In integrated wiring, two types of wiring are classified from the largest category: unshielded wiring and unshielded wiring. the unshielded wiring was first originated in Europe, it mainly adds a metal shielding layer to the external of a common unshielded wiring system. The principle is to use the emission, absorption, and skin effect of the meta

This article mainly introduces 33 common php interview questions and answers, which are frequently encountered during interviews. Let's take a closer look. 1. in PHP, the name of the current script (excluding the path and query string) is recorded in the predefined variable (1), and the URL linked to the current page is recorded in the predefined variable (2). The Code is as follows: A: echo $ _ SERVER [

Uiimageview in ASIHTTPRequest or sdwebimage? (Put the Uiimageview in the UITableViewCell inside to ask more praise)13. Trouble you to design a simple picture memory buffer (removal strategy is a must say)14. Tell me about your experience using instrument to optimize your animation performance (don't ask me what instrument is)What's Loadview for?Viewwilllayoutsubview you always know.What kinds of queue are there in GCD? Have you built the serial queue yourself? What is the threading model behind

class redefined the same method in the parent class. The Override method must have a method name, a parameter list, and a return type that are identical. The Override method does not restrict access to the original method.does 6.Java support multiple inheritance? Java does not support multiple inheritance, and each class allows only one class to be inherited, but multiple interfaces can be implemented.7. What is the difference between a process and a thread? A process is the execution of a prog

class.The cglib is the generation of the original subclass, which is also applicable for cases where interfaces are not implemented:OriginClass --------> ProxyClassCglib uses bytecode generation to invoke the original class method in the proxy class, and the JDK proxy is called using reflection, because the cost of additional security check in reflection is not good enough for the current JVM JIT to reflect the inline support, and the JDK proxy is weaker than cglib in performanceWhat the hell i

In the overwhelming support of the vast number of netizens, we have to conquer the fortress team the first time to provide you with 2016 years of soft test related information, provide the reference answer for reference only, because of the time relationship, and no verification and audit, if there is any doubt, you can join us to conquer the Fort Soft Test team "network engineer Test Exchange Group QQ 487697066 ".This article is from the "net Worker's Home" blog, please make sure to keep this s

t=0 moment to see his influence on the next (t=4) moment (4 seconds from now) is visible x (0) *h (4)stand at t=1 moment to see his influence on the future (t=4) Moment (3 seconds from now), Visible is X (1) *h (3)stand at t=2 moment to see his influence on the future (t=4) Moment (2 seconds from now), Visible is X (2) *h (2)stand at t=3 moment to see his influence on the future (t=4) Moment (1 seconds from now), Visible is X (3) *h (1)So the so-called flip just because you are standing is now

= [[B alloc] init];a. transparendvaluedelegate = b;//Set Object A proxy As Object b This allows the value to be passed through a delegate between views A and B! The following example delegate has two types: 1, a View class object proxy object is the parent view, the child view with the proxy implementation let the parent view display other child View 2, a child view under the same parent view is another child view of the proxy object, Let another child view change its background color to the g

I don't know any questions during PHP pre-processing statement execution. please give me some answers and there are not many scores. below is the code $ Servername = 'servername'; // Server Name $ username = 'username'; // database username $ password = 'password'; // login password $ dbname = 'mydb '; // create a connection $ conn = new mysqli ($ servername, $ username, $ password, $ dbname); // Check the

Php: answers Cainiao questions $ SQL = "select * from lydata where name LIKE '%". $ search. "% '"; $ Query = mysql_query ($ SQL) or die ("link failed "); While ($ row = mysql_fetch_array ($ query )){ ?> How can I make the last search disappear when I return to another page or refresh it or perform the next search? Reply to discussion (solution) Don't understand wh

other large file separate server. Use the Code optimization tool.29. Prevent SQL injection vulnerability generally with the __addslashes___ function.What is the difference between a value in 30.php and a pass-through or address? A: The value of the argument is the value assigned to the parameter to the row parameter, so the modification of the parameter does not affect the value of the argument.An address is a special way of transmitting a value, except that he passes an address, not an ordinar

, SortedList5, HashTable6, Bit Array55) What is a thread?A process is a single execution of a program, a process that contains one or more threads, and a thread is the basic unit of dispatch and resource allocation. A thread has three states, blocking, running, and ready.56) Enumerate the attributes and methods of the thread class?CurrentCulture, CurrentThread, CurrentContext, IsAlive, Isthreadpoolthread, IsBackground, priorityWhat are Access Modifiers?1, public any place can access2. Private cl