Objective-C

In C ++, class methods include overload, override, and hide (of course, functions can also be overloaded .). The coverage and hiding of C ++ is a very confusing concept, especially hidden. Learn objective-C, because it is similar to C ++, so pay

Objective-C uses nsstring to operate strings. nsstring is called a non-modifiable string because the content and length of a string cannot be modified when you create a string using nsstring. 1. Create a string Nsstring * STR = @ "I Am a

For arrays, dictionaries, and collections, objective-C provides an enumeration method to access each element. There are two methods: Method 1: Nsarray * array = ...; member * member; int COUNT = [array count]; for (INT I = 0; I Method 2:

In objective-C, the cocatouch framework further encapsulates the native socket, that is, stream. Add cfnetwork framework Initialize socket Cfreadstreamref readstream; cfwritestreamref writestream; cfstreamcreatepairwithsockettohost (null,

The difference between the two is: 1. import will contain all information about this class, including entity variables and methods, while @ class only tells the compiler that the name declared after it is the name of the class. As for how these

The following are the notes for learning objective-C 2.0. The original book I purchased is the original English version. Due to my limited level of English, there may be omissions in understanding. Original book purchase address: Amazon 2. Objects,

The following are the notes for learning objective-C 2.0. The original book I purchased is the original English version. Due to my limited level of English, there may be omissions in understanding. Original book purchase address: Amazon 3.

The following are the notes for learning objective-C 2.0. The original book I purchased is the original English version. Due to my limited level of English, there may be omissions in understanding. Original book purchase address: Amazon 7. The

#import #import //MD5- (NSString*)md5Hash { unsigned char result[CC_MD5_DIGEST_LENGTH]; CC_MD5([self bytes], [self length], result); return [NSString stringWithFormat:

Based on the experience of many netizens and the experience of iOS development, the author summarizes the iOS development technology for later users to learn, I also hope that I can gain a deep understanding of iOS development. 1. Sources of

  # Import # Import Int main (INT argc, const char * argv []) {NSAID utoreleasepool * Pool = [[NSAID utoreleasepool alloc] init];Nsstring * str1 = @ "this is a example .";Nsmutablestring * mstr = [[nsmutablestring alloc] init];Nsange substr;//

The following notes reference site: http://blog.csdn.net/huanglx1984/archive/2009/07/06/4325377.aspx Currently, apple only uses objective-C as the supported language. The differences with C ++ are: All classes in the O-C must inherit from

  Objective-C syntax Translate: sprouting stone 2010-03-10 Post please indicate to transfer Apple development Chinese Network (http://www.CocoaDev.cn) The preceding description is an integral part of this document.   Objective-C is the most

Http://www.davidhamrick.com/2012/02/12/Adding-Properties-to-an-Objective-C-Category.html Let's say you have a category that needs to store some information. Unfortunately you can't add an instance variable, but you can add something called an

Example ~ To implement Interaction between JavaScript and objc How does one implement JavaScript to call an interface inside objc? I implemented it in this way. For example, an entry JS Function testclick (CMD, parameter1, parameter2) { Alert (1

In: argument is an input argument only and won't be referenced later Out: argument is an output argument only, used to return a value by reference Inout: argument is both an input and output argument Const: The (pointer) argument is constant

The role of the Protocol is similar to the multi-inheritance of abstract base classes in C ++. Similar to the interface concept in Java.The Protocol is a list of multiple class sharing methods,Methods listed in the Protocol are not implemented in

KVC [Object setvalue: avalue forkey: akey]; // assign a value to the akey variable of the object Avalue = [object valueforkey: akey]; // obtain the value of the akey variable of the object [Object setvalue: avalue forkeypath: akeypath]; // set

Reprinted please indicate the source: blog.csdn.net/zhangxingpingAbout attributes In C ++, you usually need to write the getter and setter methods to obtain or set the value of the instance variable. The two methods need to be displayed in the

Address: http://howtomakeiphoneapps.com/2009/05/for-and-foreach-loops-in-objective-c/     Loops are the gears of programming: they make your code take action. The two loops I use most often is the For Loop (to do a predefined number of steps) and