swift macros

Why is swift so popular ?, Swift fire? First of all, swift is very popular. It ranks 16 in the month when it comes out. Why is it so hot? Is it because of the Apple brand? Or other reasons? As a code farmer (working for more than 15 years), I will talk about my personal opinions. There are many excellent PC-side development languages: JavaScript, Python, and Ruby

can always be converted from a NSString object to a swift string value, so there is no need to use an optional type converter () as?). You can also create a NSString object in a string by defining constants and variables. Copy Code code as follows: Import Foundation Let mystring:nsstring = "123" If let IntegerValue = (myString as String). ToInt ()) { println ("\ (myString) is the integer \ (integervalue)") } Localizati

10 swift code that impressed Swift programmers and 10 swift code Using a single line of code to complete the same 10 exercises, let's take a look at the contest between Swift and other languages. 　　Multiply the value of each element in the array by 2 Use map to implement var arr = [1,2,3,4]; var newArr =

This section contains content: Mix and Match overview (mix and Match overview) Import in target of the same app (importing Code from within the same app target) Import from Target in the same Framework (importing Code from within the same Framework target) Import external Framework (importing External frameworks) Using Swift in Objective-c (using Swift from OBJECTIVE-C) Rewrite

One: Understanding Swift//1. Import the framework//#import Import UIKit//2. Define an identifier//int a = ten;//define identifiers in Swift: whether the identifier is a constant or a variable must be established//var (variable)/let (constant) identifier name: type of identifier = initialization valuevar a:int =Ten; let B:double=3.14; a= in;//B = 3.11 Error notation//3. The statement can not follow after the

[Swift learning] Swift programming tour --- ARC (20), swift --- arc Swift uses automatic reference count (ARC) to track and manage the memory used by the application. In most cases, this means that in the Swift language, memory management is "still working" and you do not ne

In addition to the release of IOS8 and Max OS X 10.10, Apple released a new programming language, Swift, at this year's WWDC conference. It has to be said that Swift has a big change and makes programming easier, and the following describes the definition of constants and variables for Swift, the use of basic control statements:It is important to note that

Document directory Code vs. Data Homoiconicity, code = Data Working with macros Debugging macros Code Templating When to use macros Using macros, for example What is metaprogramming? Metaprogramming is the use of code to modify or create other code.It is primarily a developer tool and acts as a force multiplie

[Swift learning] Swift programming tour-character and string (5), swift tour String is the String type of swift. A string is a valid Character Sequence. Therefore, a character set can be expressed in combination. You can use the + symbol to connect to a string. String type is a fast and modern String implementation. E

[Swift learning] Swift programming journey (1): swift learning programming journey The most classic example of learning a new language is to output "Hello World !" Print ("Hello World! ") Swift is output in this way. If you have used other languages, you may be familiar with them. But it is much simpler than some c. 1.

[Swift first sight] Swift array and swift ArrayIn Objective-C, arrays are common data types. In Swift, there are NSArray and NSMutableArray in OC, however, in Swift, only let and var are used to determine whether the array is variable. arrays in

[Swift learning] Swift programming journey (3): swift learning programming journey 　　Tuples) 　　Tuples combines multiple single values into a composite value. It can contain any type of value, and does not need to be of the same type. 1. Create tuples 1. let http404error = (404,"NOT FOUND!")let (statusCode, statusMessage) = http404errorprint("The status code is \

Summarize the 20 common questions and answers in the swift language, and summarize the 20 common questions in the swift language.1. if I am an entry-level iOS developer, should I select swift for learning, objective-c for learning, or both? This can be decided based on two situations: 1. I want to enter the company's position for iOS development 2. I just want to

your plist file less added something, together to send up;　　Here is the choice of one, I have chosen to run in the background, you can choose another property, use time to run, as for key I do not remember. I can find it in Baidu Map Forum.Here incidentally, after the iOS9, Apple opened ATS, the service is actually need to support HTTPS, it is estimated that Apple's goal is to reverse force developers to enhance their security, but sometimes the company does not want to spend money to buy the H

It's time to develop apps for iOS and Mac OS x using the easy-to-use, comprehensive swif language.While programming languages are not so easy to fade away, the development team that insists on the fading paradigm is doing so. If you are developing applications for mobile devices and you have not studied swift, then note that when Swift involves the development of applications for Macs, iphones, ipads, Apple

Excel/word macros have been disabled workaround come on, little fat will tell you that. "Macros have been disabled" prompts the workaround, these two prompts in Excel and Word often appear, how to do? Please try the following method. --word macros have been disabled workaround Method One, Word Options--> Add-ins--> manage "COM add-ins," and go to-->

)To view the code in the Xxx-swift.h file:It is not hard to see that the content in this file actually translates the code in Swift into OC code. Note: If the project is cleaned, the file will be deleted, and the file will be regenerated only if all Swift code is compiled through the rebuild process. Integration of the frameworkStepping on the pit time complex

Excel macros may be tall for beginners, but if you're skilled, you'll find it's not, and Excel macros are powerful, but they're disabled by default because of security risks, and the following small series teaches you how to turn on macros that are disabled by default in Excel. Excel 　　Excel macros have been d

--word macros have been disabled workaround Method One, Word Options--> Add-ins--> manage "COM add-ins," and go to--> the "Manuscript Wizard, calligraphy add-in, office special symbol input add-in" three cancel--> OK. Method Two, tool--> macro-> security--> a trusted publisher, empty the hook in the selection box below, and then change the macro security to the highest. Method Three, you may be the first time you installed Office in the share of VB

C/C ++ grand all (reproduced, original post address http://www.cnblogs.com/sevencat/archive/2004/06/10/14872.html)I. Standard definition macroThe standard predefined macros are specified by the relevant language standards, so they are available with all compilers that implement those standards. older compilers may not provide all of them. their names all start with double underscores. _ File __This macro expands to the name of the current input file,