how to lesson 6 on code org

. Copy Code code as follows: [\\w!#$% ' *+/=?^_ ' {|} ~-]+(?:\ \. [\\w!#$% ' *+/=?^_ ' {|} ~-]+) *@ (?: [\\w] (?: [\\w-]*[\\w]) +[\\w] (?: [\\w-]*[\\w])? 5. Verify ID NumberThe following is a regular check of the ID number. 15 or 18 bits. 15-bit: Copy Code code as follows: ^[1-9]\\d{

); }4, good, is so simple, do not be excited, the following is more simple, to assign a role to the license, on the Code static public Function createempowerment ($items) {$auth = Yii:: $app->authmanager;$parent = $auth->createrole ($items [' name ']); $child = $auth->createpermission ($items [' description ']);$auth->addchild ($parent, $child); }5, good, the allocation of the license is also created, I do, Tainima simple, continue on the

....example of opening a specified product page via a URL :var params = {URL: "https://detail.tmall.com/item.htm?id=528887107325",Mmpid: "Mm_175878368_0_0"};Uexalibaichuan.openitemdetailpagebyurl (Json.stringify (params));6. UexmobsmsMob SMS Verification Plugin: Package Mob SMS verification related OperationsPlug - ins:Method Description:Sendcode Send SMS verification code to mobile phoneCommitcode Submit S

the annotation in HMTL, you can use the following expression. 20. Matching HTML tags The following expression can be used to match the tags in HTML. Really useful, master these 20 regular expressions can let you write less 1,000 lines of code, interested friends for reference under it! Related syntax for regular expressions Here is a very nice regular expression Cheat Sheet that I found

1. If a method can be static, then declare that he is static, the speed can be increased by 1/4; 2.echo is more efficient than print, because Echo has no return value, and print returns an integer type; 3. Set the maximum number of cycles before the loop, not in the loop; 4. Destroy the variable to release the memory, especially the large array; 5. Avoid using magic methods like __get, __set, __autoload, etc.; 6.requiere_once () comparative consumptio

Code First Entity Framework 6 passive to active explicit it loading mode practical analysis (with source Code), entityloading There are three ways to use Entity Framework to load correlated entities: 1. lazy Loading ); 2. Greedy loading (eager loading ); 3. explicit loading ). EF uses lazy Loading by default ). Everything is automatically handled by EF. This meth

() method, or I prefer to design the runner as an interface. Parentrunner Sorting and filtering are not discussed at the moment. The name of parentrunner "Parent node" Runner. However, for the Runner, "parent node" only has a unit test class and a group test class. Therefore, parentrunner Runner of the parent node, including ignoredclassrunner and errorreportingrunner. The type parameter t of parentrunner A type of child. This is a relativelyChic Design. Private list Protected abstract list Pr

Java concurrency series [6] ---- Semaphore source code analysis, java ---- semaphore Semaphore is a common class in the JUC package. It is an application in the AQS sharing mode and allows multiple threads to operate on shared resources at the same time, in addition, it can effectively control the number of concurrent jobs and use it to control traffic. Semaphore provides the concept of a license, which can

Yesterday, a netizen asked "How to place images on the four corners of the HTML page". The answer is as follows for the Netizen's reference. 1 Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" > 2 Html Xmlns = "Http://www.w3.org/1999/xhtml" > 3 Head > 4 Meta HTTP-equiv = "Content-Type" Content = "Text/html

$status = fwrite ($h, ' some text ');if (! $status) { log (' writing failed ');}Less code${0} = fwrite ($h, ' some text ');if (!${0}) log (' writing failed ');Even less codeFwrite ($h, ' some text ') or log (' writing failed '); 2. Use ternary operator. A lot of codeif ($age $message = ' welcome! ';} else { $message = ' You are too old! ';}

Recently, the company began to modify the framework based on android4.0 ICs. The company's mobile phone is not suitable for home testing and does not have the kernel permission.From a personal perspective, I have two mobile phones, one is HTC G9 Aria and the other is Samsung i9100 galaxys2 and cyanogenmod.Source codeAll provide driver support for these mobile phones, and can be easily compiled and packaged, and installed on mobile phones.PreviousArticleIt is the compilation of android2.3, it is

(arg = = null) return []; else if (Arg instanceof Function arg.length return arg.call (NULL); Else return arg; }; __funlist = new Array (); The above simple dozens of-line JavaScript code consists of three auxiliary functions, a principal object, a constant nil (which we know later to represent an empty table or logical false), and a stack that holds the name of the function. The Lispscript static object forms the body of the Lispscript parser, whi

?] # test string is empty # echo $?1a=# [[-Z ' $A]] # Test the string stored in the variable, whether is empty # echo $?07)-n "b", test B to indicate whether the string is not empty, not empty is true# #测试方法一 # Test-n "Obama" # echo $?0a=# test-n "$A" # A variable is empty, test its result # echo $?1a=jerry# test-n "$A" # A variable is not empty, test its result # echo $? 0# #测试方法二 # [-N ' How is You? '] # echo $?0a=# [-n ' $A ']# echo $?1# #测试方法三 # [[-N ' How is it? '] # test string is empty #

6 beautiful and fashionable Web Front-end 3D effects (with source code), web3d As a cutting-edge Web developer, I have more or less mastered HTML5 and the popular 3D technology. Just a few years ago when these new technologies emerged, developers have already used them to test their skills. Now these advanced technologies have been developed everywhere, especiall

Python Verification code 6-bit Auto generator！ /usr/bin/env python#-*-coding:utf-8-*- ImportRandom tem="" forIinchRange (6): Digi= Random.randrange (0,11) ifDigi = = 1orDigi = = 5:## # # #当randrange (0,11) randomly generated number is 1 or 5 when,,,,:) is not a bit around Ah, hahahanum = Random.randrange (1,10) Num=str (num) TEM+=NumElse: ZM= Ra

Code Search is very popular recently, and it does help a lot for developers. Here we will make a summary. If there are other good ones, we recommend you ~Recommendation criteria: fast, full-language support, and Ajax support1,Gotapi[Http://start.gotapi.com/]Supports HTML, CSS, css2, JavaScript, actionscript, Google Code, XML, XSL, XPath, XSD, PHP, Ruby, Python, Perl, As, ColdFusion, C, programming languages

6 Easy Steps to learn Naive Bayes algorithm (with code in Python) IntroductionHere's a situation you ' ve got into:You is working on a classification problem and you have generated your set of hypothesis, created features and discussed The importance of variables. Within an hour, stakeholders want to see the first cut of the model.What'll do? You are hunderds of thousands of data points and quite a few vari

Today to do the invitation code this function, but I do not bother to modify the database table structure, and then read a lot of blogs on the internet, and then a blog above the PHP read a way to write, and then according to my understanding to rewrite into. Net. Words do not say more directly paste code. static void Main (string[] args) {int num = 10086; Console.WriteLine (Createcode (num))

codelen = 2 m + k + 1. The number of digits in [1 info] is I = codelen-M = m + k + 1; 3. Read the I-bit binary code word and convert it into a 10-digit system, which is assumed to be w. From W = codenum + 2 ^ K, codenum = W-2 ^ K. C. Example: For k = 0: codenum = 3. The encoding is as follows: The binary value is 11. If K = 0 is removed, 100 is obtained after 1 is added; So m = 2; The encoded result is [mzeros] [1] [info] = [mzeros] [1 info] = 00100.