Objective-C

Like to read some Open-source project source, always will find that the great God's code always have some short and efficient macro definition, click to see, find obscure, not to mention learning, sometimes understanding is a difficult, but the

For a language to learn, individuals feel that the most important is its grammatical format and those keywords. Because for most of the basic language now, each language is a way of thinking to communicate with the computer. Therefore, in fact,

Get the iphone's IMSI serial number #include #define PRIVATE_PATH "/system/library/privateframeworks/coretelephony.framework/ Coretelephony " -void Getimsi () { #if! Target_iphone_simulator void *kit = Dlopen (private_path,rtld_lazy);

Both Android and iOS Development support C + + development and can be used in a set of code multi-platform. At the same time, C + + difficult to decompile the characteristics of the Android development can bring code confidentiality, and another

Always in order to facilitate the implementation of a method, the way to define the variable at the top of the method, that this should and H file definition is the same, in fact, is defined in the M file variable is static, the class of multiple

Chapter No. 04 Types and dynamic binding of objects An important feature of OBJECTIVE-C is its dynamic nature, which describes the dynamic type of objective-c, dynamic typing, and dynamically binding. 4.1 Dynamic Binding 4.1.1 What is dynamic

First, OBJECTIVE-C (hereinafter referred to as OC) Introduction Objective-c is based on C, the addition of object-oriented features to expand the general-purpose high-level programming language, but also writing OBJC, obj-c and less used Objective

We usually do map positioning, mainly by latitude and longitude to accurately locate a location.But, we are human ah, we are not satellites AH.The user on the map to find a place, we can not tell him, this place is longitude how many degrees,

1.NSLog (@ "Hello world!"); /Print the function of the statement, the string that needs to be printed is placed after @.NSLog (@ "is%d and%d different?%@", 4,4,@ "YES");2. square brackets have two functions:1) Accessing array elements2) is used to

In Objective-c, defining a class requires two parts: the first is the interface (interface), and the second is the implementation (implementation). interface to the interface file, and the implementation corresponds to the implementation file. The

After a period of iOS development using the Objective-c language, it was found that its language base was relatively weak and began to compensate for its shortcomings. I found that after using a language, many of the principles behind it would find

———————————————————————————————————————————Memory management(1) Memory management of OBJECTIVE-CThe stack area holds the local variable (because the basic data type occupies the storage space is fixed, by the system to allocate, we do not need to

Tip: The "instance variable" in this article is "member variable" and "local variable" isFirst, IntroductionARC is a new feature that has been added since iOS 5, completely eliminating the cumbersome manual management of memory, and the compiler

Wangzz Original address: http://blog.csdn.net/wzzvictory/article/details/8592492 reprint Please specify the source if you feel that the article is helpful, Please leave a message or follow the public account wangzzstrive to support me, thank you!As

At the time of making a multi-graphic example of an OOP of OC. Xcode unprovoked report must explicitly describe intended ownership of an object array parameter"Exception information, check the code a few times or the compiler error, After looking

http://www.tekuba.net/program/335/ Main references in this series:Objective-c Runtime ReferenceObjective-c Runtime Programming GuideMajor documents involved: Objc/message.h,objc/objc-api.h,objc/objc.h,objc/runtime.hCool bar [tekuba.net] Use the

Main references in this series:Objective-c Runtime ReferenceObjective-c Runtime Programming GuideMajor documents involved: Objc/message.h,objc/objc-api.h,objc/objc.h,objc/runtime.hCool bar [tekuba.net] Use the Creative commons agreement "attribution-

A. dot Syntax The essence of point syntax is method invocation , not access member variable, compiler sees point syntax has two kinds of processing 1 . is an assignment, the assignment is to expand to the set method 2. Not assignment: expand

ArticleDirectory 2, from Hello, world! Start 2, from Hello, world! Start This series of lectures has a strong correlation. If you are reading this article for the first time and want to better understand the content of this chapter, I

  Original article address: Http://blog.csdn.net/kindazrael/article/details/8108868 In C, Preprocessor is a powerful tool that makes your code easier to read and modify. With preprocessing code, you can redefine a part of the code to make your code