redundant colon

This article was reproduced in: http://www.benmutou.com/archives/17891. Beginners most prone to confusion top1--call a function with a dot or colon?Let's take a look at the following two lines of code:Msprite.setposition (msprite:setposition);For the first time a friend of Lua, this is a nightmare, for the function of the call there are two forms, let us casually pick the meaning of it?The two forms are different, the difference is very large, but onl

27. Interface Services Self-discipline should be strict, treat people should be wide--"Hong Chongming vegetable root Tan" Exclamation point introspection: "We used to do OOP programming, always focused on how to use other classes to solve problems, but less consideration of the design of their own classes on the impact of other classes." ” Quotes Open Previous notes: "As mentioned before, the OOP world is democratic, all objects are independent and equal citizens, have the right to seek servi

20. Front language The use of the wonderful, with a heart--"sung Yue Fei biography" After a short break, the colon switches to the topic: "Let's talk a little bit about Visual Basic and Delphi." ” The exclamation mark is slightly colored: "Visual basic is best used, build a form, drag some controls from the toolbox, and then define their properties and behavior, OK!" ” The colon nodded: "VB the biggest

From: http://blog.zhenghui.org/2009/09/11/colon-class-3_4/ 3.4 event-driven: I want to call you something. Don't bother me. ! Preview Both of them make the caller no longer dependent on the calledCodeAsynchronous calls decouple the two from time. The theme of them (control inversion, dependency inversion, and dependency injection) is control and dependency. The purpose is to decouple them, and the method is reverse. The key to achiev

16. Dynamic language Freedom is not free--kelly strong Exclamation-Mark impatient to ask: "Now can talk about dynamic language?" ” Colon speech: "Once upon a time, dynamic language is only to accompany the Prince reading role, when their name is ' scripting language '." Recently, but the rapid rise, as if there is a rival to the static language. ” The question mark cannot help asking: "Is the dynamic language and the scripting language the same th

PDO: ATTR_CLIENT_VERSION what does this double colon mean? This post was last edited by lghyt at 12:34:45, January 6 ,. These two symbols in the PHP class are dizzy. PDO: ATTR_CLIENT_VERSION what does this double colon mean? Reply to discussion (solution) When accessing the member variables or methods in the PHP class, if the referenced variables or methods are declared as const (defining constants) o

The difference between the dot (.) and colon (:) In the lua programming script is as follows: When you declare a function in lua, you can use either of the following methods: 1. Function ClassA. show () Print ("test1 ") End 2. Function ClassA: show () Print ("test2 ") EndSo what are the differences between the two methods? Simple When defining: ClassA: show () is equivalent to ClassA. show (self). To achieve the

PHP code Common "::" Operators, this is the scope of the qualified operator, which is used to pin class in the non-scoped level, the left is the scope, the right is the access scope of the members. Scoped operator (also known as: Range resolution operator) or, more simply, a pair of colons, Can be used to access static members, methods, and constants, and can also be used to override members and methods in a class. The scope defined in PHP has self and parent, and the static scope is pr

: This article mainly introduces PHP: Colon, endif, endwhile, and endfor. For more information about PHP tutorials, see. We often see many strange PHP syntaxes in the templates of wordpress blog programs, such: [Php] view plaincopy "Red"> empty For a considerable number of PHP enthusiasts, what are these things? In fact, these are alternative syntaxes for PHP process control, but they are not commonly used. The followin

PDO: ATTR_CLIENT_VERSION what does this double colon mean? the two symbols in the PHP class edited by lghyt in 2013-12-0612: 34: 45 are dizzy. PDO: ATTR_CLIENT_VERSION nbsp; what is the meaning of this double colon PDO: ATTR_CLIENT_VERSION? At the end of this post, the two symbols in the PHP class were edited by lghyt at 12:34:45 on. PDO: ATTR_CLIENT_VERSION: More

Scope symbol:: The front of the general is the class name, followed by the class is generally the member name, C + + as an example to avoid different classes have the same name of the member and the scope of the way to differentiateFor example: A, B represents two classes, and a member is member in a A, B. SoA::member represents a member of Class A memberB::member represents a member in Class B member global scope Symbol: When a global variable has the same name as one of the variables in a lo

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!one, when static properties and static methods are called:: The same as the role, but the use of different objects! :: Refers to static methods or properties within a c

Pdo::attr_client_version what does this double colon mean? This post was last edited by Lghyt on 2013-12-06 12:34:45 These two symbols in the PHP class are very dizzy.Pdo::attr_client_version what does this double colon mean? share to: more ------Solution--------------------When accessing a member variable or method in a PHP class, if the referenced variable or method is declared as const (defi

In fact, the content after the colon is the initialization of the member list, there are generally three kinds of situations:1. Initialize the object that contains the object member, for example,Class line has two private object members StartPoint, Endpoint,line's constructor written:Line (int sx,int sy,int ex,int ey): StartPoint (Sx,sy), endpoint (Ex,ey) {...}The constructors of the respective objects are called separately in the order of the object

1.Scope symbol:: The front of the general is the class name, followed by the class is generally the member name, C + + as an example to avoid different classes have the same name of the member and the scope of the way to differentiateFor example: A, B represents two classes, and a member is member in a A, B. SoA::member represents a member of Class A memberB::member represents a member in Class B member2.Global scope Symbol:For example:#include As a global scope symbol, double colons are placed

Notice that the if\while\for (or function definition) statement contains a colon at the end--we tell Python that it follows a block of statements. Use of--------------colon if guess = = number:print ' Congratulations, you guessed it. ' # New blocks starts herePrint "(but you don't win any prizes!)" # New blocks ends hereElif Guess print ' No, it is a little higher than ' # Another block# can do whatever y

Thinking after the first lesson of "Colon class" 01-01 as a software developer, what stage are you in now? What is your goal in the future. 01-02 the drawbacks of the traditional way of learning. Do you have any pain? 01-03 what qualities and spirit do you think a good programmer needs to have. 01-04 you know which computer languages. What is the basis of your choice of a language and the joy of evil? 01-05 What do you think is t

For example, I want to link to the home page in the navigation bar: quot; {U ( #039; IndexIndex #039;)} quot; cannot be properly linked to the home page. Write it as follows: quot; {: U ( #039; IndexIndex #039;)} quot; (a colon is added before the U method), I am in another place, in a form: amp; lt; formaction quot; metho... for example, I want to link to the home page in the navigation bar: Written as follows: "{U ('index/Index ')}" Cannot b

The important paradigm of lesson two (4) 2.4 Concurrent paradigm--cooperation and competition Compete in cooperation--"concurrence" Keywords: programming paradigm, concurrent programming, threading, process, program, function, logical, Object-type Absrtact: A brief talk on concurrent programming ？ Questions What are the characteristics of concurrent programming? What are the benefits of concurrent programming? What conditions should the reasonable concurrent programming design meet? : E

The following is a description of the use of colon and double colon in C + +, the need for friends can come to reference the next (1) denotes the definition of an institution's inner-field (that is, the variable takes up several bit spaces) Copy Code code as follows: typedef struct _xxx{ unsigned char a:4; unsigned char c; } ; XXX (2) The colon at the