Objective-C

OC point syntax and variable scopes One, point grammar (a) Understanding point grammar Declare a person class: Copy Code code as follows: #import @interface Person:nsobject{int _age;//defaults to @protected} -(void)

1. First prepare the document containing all the provinces and cities, and drag the document into the Xcode we built. 2. Then create a new path nsstring *path = @ ""; Then drag the provincial urban documents to the @ ""; 3. Before sorting, we

The general principle is that small storage capacity data types can be automatically converted into large storage-capacity data types, depending on the type of data consumed and the type conversion or coercion. Different types of data are

I. Object-oriented and encapsulationThree main object-oriented features: encapsulation (member variables), inheritance, and polymorphismIn the OC language, classes are processed using @interface and @implementation.@interface as if exposed to the

First of all, the most important thing is not the code but the compiler option, make sure to change the compiler's compile Sources as option to objective C + + before doing a hybrid compilation.The default option is according to file type, in which

This evening began to see the "Objective-c Program Design (4th edition)" This book (Oschina is doing this book review activities, see here for details), so far to see the 7th chapter, so want to try to write two simple program compiled run-and-run

The protocol @protocol in Objective-c, similar to the interface interface in Java, lists the methods that this class does not need to implement, and is implemented by classes that implement this Protocol.1 Declaration Agreement

Transfer from http://blog.csdn.net/haishu_zheng/article/details/12873151The @dynamic in Objective-cThe difference between @dynamic and @synthesize@property have two corresponding words, one is @synthesize and the other is @dynamic. If @synthesize

Use of declarative properties: Declarative properties are called compile-time syntax @property (retain,nonatomic) Some *s; @property ( parameter one , parameter two ) Some *s; parameter 1: Retain: Decorated reference (object) data type Assgin:

Used in the development of iOS is the Objective C language, which is an object-oriented languageInterfaces and implementationsFiles that are completed in objective are called interface files, and the definition of such a file is called an

First, the basic conceptBlocks: Block syntax, essentially anonymous functions (functions without names), Apple's recommended type, high efficiency, to encapsulate and save code, block can be executed at any time.There is no post-extended version of

Underlying data type SelThe SEL, also called the selector, is a pointer to the selector that represents a method, which is defined as follows:typedef struct objc_selector *SEL;The detailed definition of the objc_selector struct is not found in the

The "plus sign stands for static" is the wrong thing to say, the person who might have expressed it to you actually means: "The method of the front Plus is equivalent to the static method inside java." In OC, methods are divided into class methods

As a fruit powder and programmer, Ben has a strong interest in OC and starts learning iOS. And also want to engage in iOS development work later. And will own the study record down, the saying is good, will not summarize the procedure ape, not good

Protocol (Protocol) is a very important language feature in objective-c, conceptually, very similar to the interface in Java. A protocol is actually a collection of associated methods (for the convenience of the following, we name the protocol

------java training, Android training, iOS training,. NET training , look forward to communicating with you! -------Class method.1. Features:Start with a plus sign (+),Call Format: [class name Method name]The benefits of class methods: No need to

A brief introduction to the current GitHub Top 100 project makes it easy for beginners to quickly learn about the current objective-c on GitHub.If you have any questions, you can contact me via Weibo @ Li Jin Project Name Project

When you access an instance variable outside of an object, you should always do so by using properties. What happens when you access an instance variable inside an object?This is a question that ocer have been hotly debated. It is argued that, in

This log is used to record the problems encountered during the learning process. "Objective-C advanced programming" is a great book written by the People's post and telecommunications Publishing House. Japanese authors are very careful about the

For iPhone development, we use instruments when detecting all of them during execution, but sometimes we can eliminate these in the cradle. Static analysise. You can run build and analyze directly for the build check. You can also check that the