redundant colon

The colon and his students (serial 27)--Interface Services Colon and his students (serial 26)--access control Colon and his students (serial 25)--Software strain Colon and his students (serial 24)--Object encapsulation The colon and his students (serial 23)--Data abstrac

Language selection The ruler has short, inch--"The Chu Ci" The question mark feels that his problem has not been solved, asking: "In so many languages, only by popularity can you prioritize?" ” "Popularity is certainly not the only indicator. The colon answers, "the language's primary and secondary strengths and weaknesses vary from person to person, and the answer is yours." Or just that sentence, the only teacher is yourself. ” Look forward to t

Object Paradigm The people for your, the second, June for light--"Mencius Heart" After the short resting, the quotation mark eagerly asks: "The object-oriented paradigm should be a special kind of command, right?" ” "Object oriented?" "The colon muttered," Let's call oo or object-style, neither unconventional nor erroneous. Before answering your question, please answer me first: What is OOP? ” Quote Ching: "OOP is a computer programming model that

Original URL: http://blog.csdn.net/trochiluses/article/details/9048539default value (:-)If the variable is followed by a colon and a minus sign, then the variable is followed by the default value of the variable.$ company=$ printf "%s/n" "${company:-unknown Company}"Unknown CompanyThe actual value of the variable can remain unchanged.Colons can also be omitted without:$ company=$ printf "%s/n" "${company-nightlight Inc"$Specify default value (: =)If t

This paper is an object-oriented preheating chapter, explaining the difference between the two ways of calling, beginners are more likely to be pits. 1. Beginner's most confusing top1--call a function with a dot or a colon? Let's take a look at the following two lines of code: Copy Code code as follows: Msprite.setposition (100, 20); Msprite:setposition (100, 20); This is a nightmare for first-time friends with Lua, why are

Data type According to the 劬, the law is the solid, the wind of the desolate country also--"Xun Yue's-shen" When the classroom calms down, the colon again says: "Before talking about dynamic languages, it's best to clarify the difference between it and the dynamic type language." ” Exclamation ya way: "They are not the same thing?" Always thought that dynamic language is the abbreviation of dynamic type language. ” "In the name of a relative, ther

Double colon rule The double colon rule is the rule obtained by replacing the ":" of the common rule. When the same file is the target of multiple rules, the processing process of the double colon rule is completely different from that of the general rule (the double colon rule allows multiple rules to specify differen

Programming centroid The speaker so care, proud and forget the words--"zhuangzi, Foreign things" The question mark first came out of the novel and asked, "just talked about low-level and intermediate languages, now should we talk about high-level languages?" ” The colon slightly sighs: "The high-level language probably has nearly thousand kinds, the popular also no less than dozens of kinds, sometimes chooses too much to be at a loss." ” Comma dis

Speaking of this topic, let's start by discussing a question with a friend today. {A:1,b:2} will error directly in console output "uncaught syntaxerror:unexpected token:"; At first I could not understand, a normal object, why will the error? In fact, the analysis will know that {} in JS in addition to the object direct volume, but also represents the statement block; If a statement starts with "{", the JS engine resolves the {} to a statement block, so {a:1,b:2} is not parsed as an object, but i

A single colon (:) used for CSS3 pseudo-classes, double colons (::) for CSS3 pseudo-elements.A pseudo-element consists of a double colon and a pseudo-element name. Double colons are introduced in the CSS3 specification to differentiate between pseudo-classes and pseudo-elements.But pseudo-class compatible with existing styles, the browser needs to support the old pseudo-class, such as: First-line,: First-le

in peacetime work with the pseudo-class selector when a colon and two colon seems to be possible, so what is the difference between the two, we first look at the world of the CSS3 selector in the specification of a description:A Pseudo-element is made of both colons (::) followed by the name of the pseudo-element. This :: Notation are introduced by the current document in order to establish a discrimination

26. Access control The husband Light Connaught will not have the letter, how easy will be more difficult--"Laozi De Sutra" Question mark question: "Does information hiding refer specifically to using private to control access?" ” "That's exactly our next focus. "Colon chin," access modifiers (access modifier) can be applied to the entire class in both Java and C #, in addition to class members. Public classes are naturally exposed, and the default

19. Platform language See its desire also, it will always consider its hateful also, see it can benefit also, will have to worry about its harm also--"Xunzi" The comma says: "Now it's time to go to Java." ” Colon: "The focus of the following is shifted from the system language to platform language--java and C #." ” The question mark hears confused: "Platform language?" Is Java not a platform-independent language? ” "Platform is very meaningful, c

18. System language The height of the form of escape and God of labor, under the form of labor and God Yat-"Hong Chongming vegetable root Tan" Question mark busy ask: "You want to compare which mainstream language?" ” The colon answers: "Just talk about the 12 most popular languages mentioned in the first class." They can be divided into three categories by grammatical features: C-class static language five--c, C + +, Java, C # and D; non-C static

The important paradigm of lesson two (3) 2.3 Object Paradigm--programming rules of democratic Society The people for your, the second, June for light--"Mencius Heart" Keywords: programming paradigm, OOP, object-oriented, program programming Summary: Oop simple Talk ？ Questions Is OOP a special type of command? What is the basic idea of OOP? Where is oop really good? Will OOP be eminence? What is the difference between programming and OOP in the design concept? : Explain After the sho

23. Data abstraction Good net of the introduction of its outline, not all the eyes and then get--"Han Fei-Chu said right under the" The question mark grabs to say: "I know: the result of process abstraction is function, the result of data abstraction should be data type." ” Colon approval: "Data type and data operation is the basic element of programming language, in addition to built-in types and operations, program language also provides a user-d

1. Colon (:) usage(1) Represents the definition of a bit field within a mechanism (that is, the variable occupies several bit spaces)typedef struct _xxx{unsigned char a:4;unsigned char c;} ; Xxx(2) The colon at the back of the constructor functions as a method of assigning a value to a member variable, initializing the list, and more appropriate for the const type of the member variable.struct _xxx{_xxx ():

For example, I want to link to the homepage in the navigation: Written in this way: "{U (' Index/index ')}" cannot be linked correctly to the homepage. Written like this: "{: U (' Index/index ')}" (That is, the U method is preceded by a colon) But I'm in another place, in a form form: U method before adding a colon no problem! Why is that? Reply content: For example, I want to link to the h

Super Paradigm Intelligent Reproduction: Robot production Robot--preface Quotation mark suddenly remembered one thing, asked: "Has a book called" C + + template Meta Programming "books, since mentions the template, wants to also belong to the generic programming? ” The colon replied: "Template metaprogramming is template metaprogramming, closely related to GP, but is subordinate to another programming paradigm--metaprogramming (metaprogramming), re

comma says: "Now it's time to go to Java." ” Colon: "The focus of the following is shifted from the system language to platform language--java and C #." ” The question mark hears confused: "Platform language?" Is Java not a platform-independent language? ” "Platform is very meaningful, can be a hardware platform, can be software platform, can also be a combination of the two." The colon explains, "platf