Objective-C

Http://chchwy.blogspot.com/2010/05/linux-objective-c.html How to compile objective-C Programs on Linux 1. Sort the following packages in sequence: Sudo apt-get-y install build-essentialSudo apt-get-y install gnustepSudo apt-Get install gobjcSudo

The previous article demonstrated how to use the traditional "process-oriented programming method" to draw "rectangles", "Circles", and "ovans ", this article describes how to use the OOP method to implement it: Because the two enumeration

Mbprogresshud (Progress indicator Library) Address:Https://github.com/jdg/MBProgressHUD Apple applicationsProgramGenerally, an elegant and translucent progress display is used, but this API is not public. Therefore, if you use it, it is likely

To create an object, follow these steps:1. dynamically allocate memory for new objects.2. Associate the newly allocated memory with related values. After both steps are completed, the object creation process is complete. Although two steps are

5. Various numerical valuesNsarray and nsdictionary can only store objects, but cannot directly store any basic types of data, such as int, float, or struct. However, you can use an object to encapsulate basic values. For example, encapsulate int

Because the ios sdk is relatively low-level, developers have to do more physical work. Fortunately, there are many third-party class libraries that can be used to simplify a lot of unnecessary work. after careful discussion by the author team, they

An Introduction to objective-C Meta class First, let's have a look at the base class nsobject. @ Interface nsobject {// implement Protocol nsobject Class ISA; // point to Meta class, all instances of nsobject share the same Meta class. } + (Void)

Objective-C Memory ManagementDirectoryReference count is the only reference for memory collection of instance objectsObjective-C memory management principlesObject ownerAutoreleasepool makes objective-C a semi-automated language for Memory

Objective-C advanced programming: IOS and OS x multithreading and Memory Management Original Title: Pro multithreading and memory management for iOS and OS X Author: (day) ben Yishu (day) Ben zhiyan Translator: Li Hua series name: Turing Program

The following is a little bit of knowledge I learned during my learning process. Although it is superficial, I want to share it with you! I hope to give more advice. First look at the code structureTestMain. mSceneManager. hSceneManager.

Compile and process commands  Since Objective-C is an object-oriented programming language, it should support reusable data and function encapsulation bodies, that is, classes. A class is a product developed on the basis of a struct. A struct can

I am a java developer with some experience. Four years of java and three years of Android, I believe I don't need to talk much about why I want to learn IPhone. Because you know. Learning IPhone is certainly a piece of cake for me. First, the

  Use: @ property (nonatomic, copy) I made a mistake on this issue today. I have been searching for a long time to find out the cause. In addition, after a simple disassembly, the Block is stored in the static variable area, and a runtime stack is

Class: @interface ClassA : NSObject{}@property(nonatomic, retain) Foo* foo;@end   Class B:   @interface ClassB : NSObject{Foo* foo;}@property(nonatomic, retain) Foo* foo;@end   The difference between the two classes is that the second class contains

Document directory 4.1. NSNumber type 4.2. NSArray type At this year's WWDC 2012 Apple's global Developer Conference, Apple made significant improvements to LLVM compilers, And the LLVM compiler in the new version of Xcode 4.4 was upgraded to 4

The Singleton mode is often used in iOS development. Apple has provided the following official methods to use objective c singleton: static MyGizmoClass *sharedGizmoManager = nil; + (MyGizmoClass*)sharedManager{ @synchronized(self) { if

@ Property: Pre-compiled commands automatically declare the setter and getter methods of attributes.Sometimes you need to declare the corresponding instance variablesWhen do I need to declare instance variables?Let's look at the following

// Creating a Singleton InstanceStatic MyGizmoClass * sharedGizmoManager = nil; + (MyGizmoClass *) sharedManager {if (sharedGizmoManager = nil) {sharedGizmoManager = [[super allocWithZone: NULL] init];} return callback ;} + (id) allocWithZone :(

Introduction: In the previous article, we talked about KVC. In this article, we learned KVO. The full name is: Key Value Observing. the literal translation is: Key Value-based observer. So what is its use? KVO is mainly used for view interaction.

Document directory NSNumber NSArray NSDictionary Apple made significant improvements to Objective-C and LLVM compilers at WWDC 2012 this year. The new features added by Objective-C are as follows:1. Method order independence The Objective-C