oops concepts with examples

Document directory 1. Greedy/lazy 2. Back referencing) 3. Named capture group (named groups) 4. word boundaries) 5. Minimal group (atomic groups) 6. recursion (recursion) 7. Callback (callbacks) 8. Commenting) More resources) Regular Expression (Regular Expression,Abbr. RegEx) Is powerful and can be used to find the required information in a large string of characters. It uses regular character structure expressions. Unfortunately, simple regular expressions are far from functional

A simple reference to the PHP object-oriented concepts and examples of the article, the need for a friend can simply refer to. Keywords and special variablesNew,class,extends. These three, we all know.:: The scope resolution operator (also known as Paamayim Nekudotayim) or, more simply, a pair of colons, can be used to access static members, methods, and constants. It can also be used to override members an

A simple article on PHP object-oriented concepts and examples can be used as a reference for anyone who needs it. Keywords and special variables, new, class, extends. All three of them know A simple article on PHP object-oriented concepts and examples. if you need it, you can give a simple reference. Keywords and speci

+a_salary. 4. write the UPDATE statement "update originsalary set o_salary=" add Value "where o_id=" Get Value "5. Cycle 3 times to complete this function. Another way is to write a stored procedure, which I will not list here. I want you to think about this before learning about cursors, and some examples of batch processing. Some people might say, "Can't the database handle data in one row?" Addsalary the data of the table into rows, and then the t

= 19;var nameprop = "Flydragon";var phone = "110"; Private variablesfunction Getphone () {//define Property Get methodreturn phone;}function Setphone (value) {//define Property Set methodPhone = value | | "";}var showfun = function () {Console.log (nameprop + "" + Ageprop);};return {Age:ageprop,Name:nameprop,Show:showfun,Get_phone:getphone,Set_phone:setphone};}var p = new Persion ();P.show ();Console.log (P.get_phone ());Example 2: How do I let the parent function of a nested function access th

; display:inline-block; vertical-align:middle; border:1pxredsolid;}The multiline text is centered, and we can look at the multiline text as a whole, one line, and the question is centered on the single line of text above, so we let the parent element's height = line-height. In order to overwrite the inherited line-height, we use line-height:normal in the #son element. Look at the effect:Seems to be biased somewhat, in order to let the middle line of the whole text and the paren

= age;} Static method. User.clone = function (user) {return new user () {user.getname,user.getage}}6. Static VariablesFor static methods, it is natural to think of static variables, and how to represent static variables in JavaScript. is divided into two situations1) private static variablesHere is involved in the knowledge of closures, do not understand the self-brain repair. Directly on the code:private static variable (function () { var privatestaticvar = ' private stat

Concept Today, there are just 2 posts with questions about masking. This tutorial is about concepts, practices, and examples for today's posts and beginners. Please have a lot of discussion, perhaps some improvement. Masking (MASK), also known as the Mask, is flash and motion tween, guide layer and other skills are also important flash function, flexible application of him, can make the work richer and more

Pk_salaryaddAsDeclare @O_ID nvarchar, @A_Salary floatDeclare mycursor cursor FOR select o_id,a_salary from AddsalaryOpen MyCursorFETCH NEXT from MyCursor to @O_ID, @A_Salarywhile (@ @fetch_status = 0)BeginUpdate originsalary Set [email protected]_salary where [email protected]_idFETCH NEXT from MyCursor to @O_ID, @A_SalaryEndClose MyCursorDeallocate mycursorGOAccording to the old method, we use Query Analyzer to execute our stored procedure and see what the result is.Exec Pk_salaryaddLet me see

Singleton: A class in the entire program will only create an object, the data of this singleton object is the entire program all the files all functions can be shared. Similar to global variablesNsfilemanagerUIApplicationfunction Start Defaultxxxx or sharedxxx non-standard single case + (myplane*) defaultplane{ staticMyPlane*plane=nil; @synchronized (self) { if (!plane) { plane=[[selfalloc]init]; }}returnplane;} or + (myplane*) sharedplane{staticmyplane*plane= nil; @synchronized (self) {if (!pl

decide whether to carry out. But building walls is a must. If contractor does not smoke and drink, it will not affect the integrity of the walls, but if you drink more, building a house prone to accidents, that is, the implementation of the expansion of the use case changed the behavior of the base case.Generalization "genneralizition": child use cases are similar to parent use cases, but exhibit more specific behavior, and child use cases inherit all the structures, behaviors, and relationship

A simple article on PHP object-oriented concepts and examples can be used as a reference for anyone who needs it. Keywords and special VariablesNew, class, extends. Everyone knows about these three items.:, The range resolution operator (also known as Paamayim Nekudotayim) or, more simply, a colon, can be used to access static members, methods, and constants. It can also be used to override the members and

Want to master the HTTP protocol, official documents only to talk about concepts and not give you a few examples, it is difficult to understand the principle ah, how to do?

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MyCursor to @O_ID, @A_Salarywhile (@ @fetch_status = 0)BeginUpdate originsalary Set [email protected]_salary where [email protected]_idFETCH NEXT from MyCursor to @O_ID, @A_SalaryEndClose MyCursorDeallocate mycursorGOAccording to the old method, we use Query Analyzer to execute our stored procedure and see what the result is.Exec Pk_salaryaddLet me see the effect ()Execute the stored procedure and see that we have affected 3 rows of dataWith the SQL statement, look at the results of table Origi

single machine (simulate the cluster)Vim start_rabbitmq_cluster.sh#!/bin/bashif [[$#! = 1]]Thenecho "Usage: $ process_num"Exit 1FiHost_name= ' hostname 'Start_num=0Process_num=$1end_num=$ ((start_num + process_num-1))rabbitmq_node_port=5672 rabbitmq_nodename= "Rabbit" rabbitmq_server_start_args= "-rabbitmq_management listener [{ port,15672}] "rabbitmq-server-detachedFor ((i=$ (start_num+1); iDorabbitmq_prot=$ ((i + 5672))manage_port=$ ((i + 15672))Node_name= "Rabbit_$i"Echo $RABBITMQ _protEcho