Regular expression special character application analysis [simple and detailed introduction must see]_ regular expressions

Characters Meaning: For a character, it is usually indicated by literal meaning that the character followed by a special character is not interpreted. For example:/b/matches the character ' B ', which becomes a special character by adding a backslash

The realization code _c language of GCD and LCM by recursive method

Mathematical principle:There are two numbers of NUM1 and num2, assuming that the NUM1 is relatively large. Make remainder r = num1% num2.When r = = 0 o'clock, that is, NUM1 can be divisible by num2, obviously num2 is the gcd of these two numbers.When

Kerberos Installation Tutorials and use detailed _linux

Kerberos protocol: The Kerberos protocol is primarily used for the identification of computer networks (authentication), which is characterized by the user having to enter authentication information only once to access multiple services (Ticket-gran

Introduction to the use of Nginx location syntax _nginx

Nginx Location Introduction The Location instruction in Nginx is an important instruction in Nginxhttpcoremodule. The Location directive is used to configure the matching URI, which is the "/uri/" in the syntax, and can be a string or regular expres

Docker container Memory monitoring principle and application _docker

Docker Container Memory Monitoring Linux Memory Monitoring To understand how the Docker container memory is computed, first understand the concepts associated with memory in Linux. Use the free command to view current memory usage. [Root@l

Server anti-hacker and Trojan attack security Settings Summary _win server

Security Policy: Open Administrative ToolsLocate local security settings. Local policy. Security options1. Interactive Landing. Do not need to press Ctrl+alt+del to enable [according to individual needs, enable relatively good, but I personally do n

JDBC Plate essence Finishing 20051226_JSP programming

Important NOTE: this part of the article is the owner of the collection from the Internet, and if you think that the content of the document violates your rights, please contact the collation (, and Dev2dev site has nothing t

The concept of CMD CODE page and its setting value use Method _dos/bat

ChcpDisplays the number of the active console code page, or changes the console ' s active console code page. Used without parameters, CHCP displays the number of the active console code page.Syntaxchcp [nnn]ParametersNnn:specifies the code page. The

SQL CONVERT function Use summary _mssql

CONVERT (Data_type,expression[,style])CONVERT (varchar (10), field name, conversion format) DescriptionThis style is generally in the type of time (datetime,smalldatetime) and String type (Nchar,nvarchar,char,varchar)When they are converted to each

To generate random numbers the use of the RAND function _c language

Function rand () is the real random number generator, and Srand () sets the random number of seeds for use by rand (). If you do not invoke Srand () before the first call to Rand (), the system automatically invokes Srand () for you. Calling Srand ()

Win2003 IIS Virtual host Web site trojan, permissions settings, security Configuration _win Server

First, the system installation1, according to the WINDOWS2003 installation CD-ROM prompts installation, by default, 2003 did not install IIS6.0 installed in the system.2, the installation of IIS6.0The following are the referenced contents:Start Menu-

Drill down to the difference between the const int *P and int * Const P (constant pointer and pointer to constant) _c language

For pointers and constants, the following three forms are correct: Copy Code code as follows: const char * myptr = &char_a;//pointer to constant char * Const MYPTR = pointer to &char_a;//constant const char * Const MYPTR =

Apache's source code installation detailed process full record _linux

Recently to begin to learn nagios monitoring knowledge, but Nagios and the combination of the relatively close, so this article will be the first Apache installation of the source study under. We now install Apache in the following steps: 1, the in

Introduction to import and export functions between different databases _mssql

1. Data import and export between SQL Server databases(1). Use Select to export data The most widely used SQL Server is to export data through the SELECT INTO statement, which has two features: an empty table based on the field followed by the Select

Weui application of JS commonly used information tips on the encapsulation _javascript skills of the projectile layer

Weui application, the use of their own JS encapsulated a few commonly used information tips of the elastic layer The code for the test page is posted behind Several shells are shown below HTML page code: <! DOCTYPE html> &a

Some techniques used by Pl/sql DEVELOPER _mssql

1, automatically select my Objects after logging on by default, Plsql developer will select all Objects after login, if you are logged on as a DBA, To expand the tables directory, it normally takes a few seconds to wait, and the response rate after

jquery make Web page tab _jquery

Page tabs make it easier to use a limited number of pages to show more elements, and using jquery to create page tabs is a very simple thing to do. Share a little tips for making a Web page tab today. ◦ Introduces the required libraries◦ Tab princip

Zend Framework Development Introduction Classic Tutorial _php Example

This article describes the introduction of Zend Framework development related knowledge points. Share to everyone for your reference, specific as follows: The Zend framework has been released! While still in the early stages of development, this tut

Nodejs URL Verification (url-valid) Usage _ Basics

JavaScript does URL checking, usually using regular expressions to determine whether the format is correct, for example: Copy Code code as follows: /^https?:\ /\//.test (URL); Of course, there are better detection methods, such

Zend Framework Tutorial The front-end controller Zend_controller_front usage _php example

This example describes the Zend_controller_front usage of the front-end controller for the Zend Framework tutorial. Share to everyone for your reference, specific as follows: Main function The core mechanism of Zendframework's MVC implementation is

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