floppy colon

I am always confused, so I searched on the Internet and checked the information. I am very depressed that there are not many posts about the usage of colons on the Internet, and they are not deep enough, after two days, I finally got a better understanding of the colon (:). I hope it will be helpful to anyone who wants to know the usage of the colon.1. switch statement Branch2 ,? : False of a ternary expres

The function of the colon in JS1. Declaring a member of an object2.switch Statement Branch3. Three-dimensional expression1. Declaring a member of an objectvar book ={Name: ' FA ',PRICE:100,Discount:function (Rate){This. Price *= rate;}};alert (Book.price);Book.discount (0.8); 80 percentalert (Book.price);2.switch Statement Branchvar a = 2;Switch (a){Case 0:Alert (' 0 ');BreakCase 1:Alert (' 1 ');BreakCase 2:Alert (' 2 ');BreakDefaultAlert ('_');}3. Th

1. New contact---Site item Enter "tel:012345678901" (if the number is greater than 10 digits after the colon), save.2. Go to the Contact list and click on the contact avatarResults:Exception thrown in Webaddress.java, program stops runningThe problem occurs because when you click the Quickcontact icon for a contact that has a site field in the People interface, the legality of the site field is checked.If it is legal, the Quickcontactactivity interfac

Note: This blog is reproduced, the source can not be tested (at least for me not to test ...) ）The double-colon operator, the scope-scoped operator, scope Resolution operator can access properties and methods overridden in static, const, and class.Used outside of the class definition, called with the class name. In PHP 5.3.0, you can use variables instead of class names.Program List: Accessing the class definition externally with a variableProgram Lis

The double-colon operator, the scope-scoped operator, scope Resolution operator can access properties and methods overridden in static, const, and class. Used outside of the class definition, called with the class name. In PHP 5.3.0, you can use variables instead of class names. Program List: Accessing the class definition externally with a variable Program List: Used outside the class definition:: Program Run Result: Fruit C

A few days ago in Baidu know inside see someone asked PHP double colon:: The use, at that time to his answer is relatively concise because the phone typing is not convenient! It suddenly comes to mind today, so here's a summary of the double colons I've encountered:: What to use in PHP! The double-colon operator, the scope-scoped operator, scope Resolution operator can access properties and methods overrid

About the colon in VB, to many people's impression is: "A line can write a few sentences." That's right, but there is one situation that is not right, that is, in the conditional statement. This is to do a VB project upgrade when encountered, because this problem I checked a good long time program, has been looking for VB in the effect is how to achieve it? Now I find that's a very big bug. I think this is not a programmer's error, it should be a VB s

When the colon script comes -- In the previous article "what is the description of the programming world brought by JSON", a script design concept has been launched, and there are not many syntax to be defined in the script language. However, it is always necessary to compare the descriptive capabilities of various languages to summarize the final friendly features. The colon has predefined its assignment

In Ruby, you can use periods (.) and double colons (: :) to call a method. The two methods are different only when the called method name starts with an uppercase letter. When you call a method using the double colon (: :) method, if the first letter of the method name is in upper case and there is no parentheses during the call 1. If the caller is a class or module, the method will be mistakenly treated as a constant; 2. If the caller is a class i

Alternative syntax in PHP (colon, endif, Endwhile, ENDfor) We often see a lot of strange php syntax in a wordpress-like blog program template, such as: Empty of For a considerable part of the PHP enthusiasts have never seen, what are these things? Is it the blogging developer's own template language for PHP? Non-also, in fact, these are PHP syntax, but not commonly used, these are PHP process control of the alternative syntax. Here we give you a det

In Lua development, we often confuse the differences between the two. Below is an example to explain: 1 class = {} 2 class. _ Index = Class 3 4 function class. new (x, y) 5 Local CLS ={} 6 setretriable (CLS, class) 7 Cls. X = x 8 Cls. y = y 9 return cls10 end11 function class: Test () 12 -- equivalent to 13 -- function class. test (Self) 14 print (self. x, self. y) 15 end16 17 18 object = Class. new (10, 20) 19 20 object: Test () 21 -- equivalent to 22 object. test (object) You can see:1. When

We often see a lot of strange php syntax in a WordPress-Class blog program template, such as: PHP endif;? > For a considerable part of the PHP enthusiasts have never seen, what is these things? Are those blogging developers doing their own PHP template language? Not also. In fact, these are PHP syntax, just not used very often, these are PHP process control of the alternative syntax.Here we give you a specific word on PHP process Control alternative syntax. What's the alternative to grammar? In

Opening speech To teach a man to fish is not to give a man a fishing--an old saying Colon opened a programmer accelerated, today ushered in the first students, they are question marks, periods, commas, quotes and exclamation marks, are the IT industry recruits. Looking at the stage filled with youthful and longing face, the colon began his opening speech-- Hello everyone! Introduce myself first, my surna

First Lesson Introduction Guide before class The first lesson focuses on the content and style of the whole classroom learning, and revolves around three questions: what knowledge is needed to become a good programmer? What thoughts do you understand? What's the spirit? This lesson is divided into five sections-- 1. Opening statements 2. First-round questions 3. Language selection 4. The first-recognition paradigm 5. Software Technology 1.1 Opening speech--four level of programmer's Rea

of the journey, suddenly feel a vaporizing waist between. Asleep eyes are slightly open, the original is to be stabbed with the elbow of the quotation mark, immediately alert. Looking up at the platform of the old confusedly staring at himself, can not help cheeks slightly hot, said: "Sorry, last night to sleep too late." ” The colon does not think: "is anxious to find a new topic, you pour inspired me." There are probably three ways of sleeping in

The important paradigm of lesson two (1) Guide before class This lesson discusses five of the most important programming paradigms: imperative, functional, logical, object, and concurrency. These are just introductory introductions, the reader understands their spirit, and the details need not be overly concerned. This lesson is divided into four sections-- 1. Command paradigm 2. Declaration Paradigm 3. Object Paradigm 4. Concurrency paradigm 2.1 Command Paradigm--all actions listen to t

Routing must-see blog blog, is also learning node must read blog: http://www.open-open.com/lib/view/open1409929982338.htmlHere are some examples of routes and the associated paths that match them:"/user/:id"/user/ A"/users/:id?"/users/5/Users"/files/*"/files/Jquery.js/files/javascripts/Jquery.js"/file/*.*"/files/Jquery.js/files/javascripts/Jquery.js"/user/:id/:operation?"/user/1/user/1/Edit"/products.:format"/Products.json/Products.xml"/products.:format?"/Products.json/Products.xml/ Products"/us

DescriptionIn Linux, colons (:) are commonly used as PATH separators and data fields (/etc/passwd. In fact, the colon (:) is also a built-in command in Bash. It does not do anything. It is an empty command and only serves as a position, but sometimes it is needed. Of course, it also has its purpose, otherwise it does not need to exist. In the Help page of Linux, it does not play any role except parameter extension and redirection.Man: Write: [Argument

A few days ago, I saw someone asking for the use of double colons: in PHP in Baidu. At that time, the answer I gave him was concise because mobile phone typing was not very convenient! Today I suddenly remembered it, so here I will summarize the double colons I encountered: in PHP A few days ago, I saw someone asking for the use of double colons: in PHP in Baidu. At that time, the answer I gave him was concise because mobile phone typing was not very convenient! Today I suddenly remembered it, s

Test conditions:Asp scriptThe uploaded file will not be renamed.Only files with the suffix .jpg can be uploaded.Exploitation:Upload a jpg Trojan file named cs. asp:. jpg. Note: by default, files in windows are not allowed to contain the following characters: (colon), so you need to capture the package and change it !!After the upload is successful, iis ignores the following characters, that is, cs. asp., but the suffix of the received photo file is st