after Apple released the swift language at the WWDC conference in 2014, many beginners had a common question of whether to study C or objective-c. Beyond that, it seems that people are still wondering which part of Swift is right for the iOS
This article focuses on access control and protected in swift, and this article explains why Swift does not have the protected option, and friends who need it can refer to
The original text is renewed and the book is folded for the first time.
Methodspecific types of associated functionality in Swift are called methods. Classes in objective C are used to define methods, which provide flexibility for users as Swift language, classes, structs, and enumerations to define usage methods.
After reading the Apple Developer document (Apple Developer Docs), I found that:
"The Xcode debugger includes an interactive version of the Swift language called REPL (read-eval-print-loop) ... can be accessed through the Xcode console or terminal.
The latest development of iOS new programming language Swift in the iOS development circle has a large response, at home and abroad there are many tutorials or small examples.Although the language of Swift is still evolving, and the changes are
As a language that can be invoked with OBJECTIVE-C, Swift also has some types and features with C, and if your code is needed, Swift also provides a mixed programming approach to the common C code structure.
Basic data types
Swift provides some
Swift is a type-safe language, and the type-safe language requires a very clear type of value in the code. If you have a partial value in your code that requires a string type, you cannot pass int incorrectly.
Given Swift's type safety, when
Protocols and Extensions Protocol (interface) and extension
Swift uses the keyword protocol to declare a protocol (interface):
Classes (classes), enumerations (enumerations), and structs (structs) can be implemented using Protocol (protocol):
Memorylayout Basic Use Method
HandyJSONIs Swift one of the JSON open source libraries that work with data, similar JOSNModel to the ability to directly convert data into JSON class instances for use in code.
Because Swift it is a static
Excessive animation of Swift close viewTurn off view transition animationsUIView. performwithoutanimation { Turn off implicit animation for Calayercatransaction. Setdisableactions(true) Self . CollectionView. reloaddata () catransaction. commit
Enumerations, structs, classes注:本文为作者自己总结。过于基础的就不再赘述 ,都是亲自測试的结果。如有错误或者遗漏的地方。欢迎指正,一起学习。1. EnumerationEnumerations are a set of related values that define a common set of types, and enum keywords case indicate that a new row of member values will be
1. Description of this seriesThis series is just a quick start tutorial for swift and does not have an exhaustive introduction to Swift,swift nor is it a simple programming language, so for a detailed system of learning Swift, this series is not for
(1) Swift and C language communicationIn Xcode, when the C language file is added to the SWIFT project, Xcode asks if the Create bridging Header is selected.The C language header file is then referenced in the bridging header.You can then use the C
Project ultimately need not support iOS6 (tear), in the QR code scanning this piece, can completely abandon the ZXing library, instead of the system AVFoundation , took a swift demo, the effect such as the following:GitHub Address: point hereRelated
Apple cancels the use of OC pointers and other unsafe accesses, the discarded Smalltalk syntax, which is completely changed to point syntax, provides a Java-like namespace paradigm overload;First, let's look at the swift language. Swift, like the C
In swift, inheritance is the basic feature of district classification and other objectsInherited subclasses can override methods of the parent class, including class methods and instance methods, properties, and satellite scripts (subscript)In the
first, the basic conceptClosures (Closures) are self-contained functional code blocks that can be used in code or used as parameter values. Closures in Swift are similar to lambda in C, OC, and other programming languages (such as C #), function
This series of notes is for bloggers to watch the Liuyubobobo instructor-led "play swift2.0" classroom study notes and organize the class of the code, but also through the web app to watch his video support him, the instructor of all the classroom
In Swift, there are five types of access modifiers: private, fileprivate, internal, public, open. Where Fileprivate and open are newly added to Swift 3. Because the previous access control is file-based, it is not class-based. This can be
There are days did not write things, take some time to practice lianbi, diligence desolate in the hippie ~The recent transfer from OC to Swift2, because Swift has not been used in the formal classics, so the understanding of the language is
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