Objective-C

  Change the company name in the source code comment: Run terminal. Enter the followingCodePress enter and restart xcode. Replace elf. sundae (AT) gmail.com (only one row)Defaults write com. Apple. xcode pbxcustomtemplatemedia definitions

I 've been learning objective-C Programming for a while, and now it's over. Next, let's start programming in IOS. Previously, to avoid forgetting, I decided to spend a few days summing up what I learned before, saving my time for forgetting.

In Java, we often use Singleton mode. These design modes are also commonly used in iOS development. Recently, we are also considering using Singleton mode in iOS development. In objective-C. the M file defines static variables to indicate global

From: http://www.cnblogs.com/csutanyu/archive/2011/12/12/Objective-C_memory_layout.html In my understanding, an object is a piece of memory. This article will discuss the layout issue of an objective-C object in the memory, if a class does not

(From: http://blog.csdn.net/arthurchenjs/article/details/6699598) If you want to write a class to ensure that only one instance exists and you can get the entry for providing services for this specific instance, you can use the single-State design

When talking about dynamic attributes in Article 7, we mentioned resolveinstancemethod. This method is not only used here, but also used to forward messages. Message Forwarding is to send a message that is not implemented to an object and

Objective-C provides a good type judgment and reflection mechanism. The foundation of OC isC LanguageAll objects are represented by pointers. The actual type information of a pointer may be blurred during transmission. You can use type queries to

A section on reading a book todayCodeWhen nsstring is instantiated, sometimes the initwithformat method is used, and sometimes the stringwithformat method is used. What should I choose? Differences: 1,Initwithformat is the instance method. It

// Initialize Lock Object Ticketcondition = [[Nscondition alloc] init]; // Start the first thread. Ticketsthreadone = [[nsthread alloc] initwithtarget: Self selector: @ selector (run) Object : Nil]; [ticketsthreadone setname: @" Thread-1 " ];

In C #, the metadata can be analyzed through reflection. Example: Code As follows: Using system; using system. reflection; namespace Hello {class program {static void main (string [] ARGs) {If (ismethoddefined (typeof (utils), "helloworld")

Basic Data Type   1. intOutput Format: % I, % d, % o % x, 2. FloatOutput Format: % F, % E, % G 3. DoubleOutput Format: % F, % E, % G 4. Char Output Format character: % C   Qualifier: 1. LongLong INT: % LiLong double: % lfTo form a long

For (Uiview * View In [Self. backgroundview subviews]) { // [View removefromsuperview]; If ([[View superclass] description] isw.tostring: @" Uibutton " ]) { Uibutton * BTN = (uibutton *) view; BTN. titlelabel. Text = @" Dynamic

For beginners, objective-C has a lot of confusing statements, but they are actually very elegant. What programmers write most are functions and functions written by themselves or written by others. This article describes the elegance of objective-C

For our. NET developers,. NET provides an automatic memory management mechanism. We do not need to care about memory management. However, the iPhone cannot be developed. This article will briefly describe the memory management mechanism and methods

Document directory Nsnumber Value assignment: Nsarray assignment and access: Nsdictionary assignment and access: New syntax features of objective-C 1. Improvement of enumeration types Previously, I declared that the enumeration method is

If (Self = [Super init] {…To perform one-time initialization for a superclass, call [Super init]. The value returned by the init method (ID data, that is, generic object pointer) describes the initialized object.Assigning the result of [Super init]

First of all, to learn objective-C (hereinafter referred to as OC) Well, you must have the foundation of C language, because OC is a superset of C language and OC is a process-oriented language. [C language is an object-oriented language]. Many

// First program example#import int main (int argc, const char * argv[]) { @autoreleasepool { NSLog (@"Programming is fun!"); } return 0; } Before explaining this program, we need to describe the steps for compiling and running.

Although iOS 5/Mac OS X 10.7 starts to import arc, xcode4.2 can be used. ARC is an automatic reference counting function that provides automatic memory management for objective-C Programs during compilation. Arc allows you to focus on the code,

    Objective-C is a class-based object system. Each object is an instance of some class; the object'sisaPointer Points to its class. that class describes the object's data: allocation size and Ivar types and layout. the class also