comment comment

All sorts of output strings Question: The terminal randomly enters a string and outputs all the arrays of the string. For example, input: "abc", output: abc, acb, bac, bca, cab, CBA Recursive solution: The key lies in recursive conditions, boundary

LINUXShell special character representation # Note 1. comment # Comment 2. in the middle of the quotation mark and # representation # itself 3. echo $ {PATH # * :}# parameter replacement, not a comment 4. echo $(2 #101011) # number conversion, not a

Connectby is available in oracle for tree traversal of the upper and lower levels of departments in a multi-level menu bar or permission system. mysql does not have such a convenient way. Therefore, we often encounter headaches when traversing data

First, prefaceFinally completed the Windows universal application "51 microcontroller assembly", six months ago began to play WindowsPhone development of the first real meaning of the app (also many shortcomings =_=). Development from mid-January to

Me:Apijson, let the interface and documentation go to hell!Https://github.com/TommyLemon/APIJSONService side:What the heck?Client:What's Apijson?Me:Apijson is a JSON transport fabric protocol.The client can define any JSON structure to go to the

When a new company is working on a project, the technical leader asks to merge all tables with the same logical structure into one table. example: {code ...} the two tables have the same structure, and then the leaders merge the tables with the same

Replace and Replace regular expressions Replace: replace the original character with a new character. 1. replace string replacement var str = 'pku2016pku2017';str = str.replace('pku', 'pkusoft');console.log(str); // pkusoft2016pku2017 If the regular

Now the mainstream web MVC framework, in addition to struts this main force, followed by spring MVC, so this is a programmer need to master the mainstream framework, the framework is more choice, to deal with the changing needs and business, the

I. What triggers 1. Personal UnderstandingA trigger, literally, is a trigger. For example, if it is dark, you turn on the light and you see something. You put a gun on it and lit it up. It will blow up later.2. official definitionA trigger is a

This article mainly introduces the methods for converting php Traditional Chinese and simplified Chinese. It involves the use of the array simplified and Traditional Chinese comparison tables in php and has some reference value. For more information,

MySQL ö×éè» ° óè ¡Ö ö öö×éöð ° '~~~~******************************************* too many other users MySQL ö×éè» ° óè ¡Ö ö öö×éöð ° '~~~~******************************************* too many other users ½ R±í CREATE TABLE `t` ( `a` int(11) DEFAULT

Since MySQL5.1.0, a special feature (ndash) has been added. The event scheduler (EventScheduler) can be used to regularly execute certain tasks. Since MySQL5.1.0, a special feature ndash has been added. The Event sched can be used to regularly

Basic Mysql partition management operations: I haven't written a blog for a long time. I have been learning Mysql partition for the past two days. Summary: Mysql supports Horizontal partitioning and does not support Vertical partitioning; Horizontal

This is a creation in Article, where the information may have evolved or changed. Sorry, ladies and gentlemen, before starting this chapter, please come first, the 5th chapter of the whole project CSS copy out, this chapter forgot to add, originally

Today, reading is sometimes a matter of "trouble". It takes time, energy, and a mind to pay. --Only with "Owin+asp.net Identity Analysis Series" to mourn the passing of ...After using VS2015 to create an MVC project run, I found that Microsoft is

SPRINGMVC is a dispatcherservlet-based MVC framework that each request is first visited by Dispatcherservlet, Dispatcherservlet is responsible for forwarding each request to the corresponding Handler,handler processing and then returning the

Wen/jc_huang (author of Jane's book)Original link: http://www.jianshu.com/p/f4d7827821f1Copyright belongs to the author, please contact the author to obtain authorization, and Mark "book author".Product analysisFirst, let's take a look at how the

User Category:AdministratorNormal user (System user, logged in user)User id: UserID, UIDRepresented by a 16bits binary number: 0-65535Admin: 0Normal Users: 1-65535System User: 1-499 (CentOS6), 1-999 (CentOS7)Login User: 500-6000 (CentOS6) 1000-6000 (

Job Requirementsuse the learned knowledge to complete classroom exercises and after-school assignments Classroom Exercises 1. Create the user Gentoo, the additional group is bin and root, the default shell is/bin/csh, the annotation

The comments in JSHTML comment: CSS comment:/* Comment */Comment for javascript://or/* multiline comment */Variable1 , the concept of variablesA variable is a quantity of change.Variables can be seen as an "unknown".2 , declaration of variablesThe