Objective-C

Sort of Nsarray Copy Code code as follows: + (ID) studentwithfirstname: (NSString *) firstName lastName: (NSString *) lastname{ Student *stu = [[Student alloc] init]; Stu.firstname = FirstName; Stu.lastname = LastName; return

In the Objective-c language, Apple introduced two macros in iOS to redefine the enumeration type (that is, Ns_enum and ns_options), which is essentially the same as defining enumerated types, but in using Ns_enum for general enumerations, Ns_enumm

Dictionaries can also be variable. The common method for changing dictionaries is as follows: #import int main (int argc, const char * argv[]) { @autoreleasepool { Nsmutabledictionary *dict = [[Nsmutabledictionary alloc] init];

the problem solved Everything is produced in the real life of the urgent need for such things, people by thinking about inventing something to solve the problem. Then the automatic release pool is used to solve any problems. Take a look at the

Let's just say this: the difference between the message structure and the function callis also a method of invoking an object,Objective-cObject *obj = [Object new];[obj Performwith:parameter1 and:parameter2];C++Object *obj = new Object;Obj->perform (

Directly on the code: / * * Quick Enumeration * */ NSLog( @"++++++++++++++++++") ;Nsarray*testarray = @[@1, @2, @3, @4, @5] ;//Iterate over array elements by Quick enumeration for(Nsarray*object in Testarray) {NSLog( @"%@",

First, the traditional get method and set methodIn Java, we can access the public member variables of an object by "object name. Member variable name", which is called "point syntax". Before you formally learn the point syntax of OC, take a look at

------Android Training, Java training, look forward to communicating with you! ----------1.OC Memory Management1) Scope: Manage any inherited NSObject objects that are not valid for other basic data types (heap area), or cause memory leaks2)

Objective-cClass, Object, methodThe actual variable is an instance of the class.The actions that an instance can perform are called methods.[Classorinstance Method];Defining classes@interface Classname:superclassDefine method as interface@endClass

There is one of the same two different. Same written by Mattt Thompson on Dec 10th, 2012Objective-c is a rapidly evolving language, in a-a-to-a-you-just-t see in established programming languages. ARC, Object literals, subscripting, blocks:in the

@ stands for "Objective-c" logo that proves you are using objective-c languageobjective-c language keywords, @property paired with @synthesize. function: Let the compiler automatically write a method declaration with the same name as the data member,

Objective-c is the C language superset, so the basic type is the same, so learn C language friends, in the face of objective-c will not be too unfamiliar, after all, the data type is the same, but the data processing method is not the same, then we

A chain-type addition calculator to realize the idea1. Effect on useCalculate * Manger=[calculate new];int Result=manger.add (123). Add (123). Sub (123). Result;The output is: result:1232. Implementation methodsNew calculate class;Add an attribute

Create the header file (. h) and export the constants:// Constants.hNSString *constNSString *const MySecondConstant;//etc.(You can use extern instead of Foundation_export when the code is not used for mixed-C + + programming.)Define the source file (

Transferred from: http://blog.sina.com.cn/s/blog_71715bf80101bnvn.htmlArithmetic functions "Arithmetic function" Name of function Description int rand () Random number

In the daily development of NSString, Nsdictionary, Nsarray, NSData, nsnumber these basic classes of data persistence, you can use the method of the attribute list persisted to the. plist file. But some of our custom classes, the way the property

2007, Objective-c in the Tiobe programming language ranked in the poor 45th place, and with the rapid development of mobile internet and iphone,ipad, such as the broad market prospects of iOS devices, objective-c also quickly rise, into the

Today we learn two methods, one is to sort the string, and the other is to sort the number of constants.Create a person class, and in the Person.h file, set the instance initialization and the setter getter method to also declare the sorted method

First define a human parent class Definition: 1234567891011121314151617181920 ////  Human.h//  OOP////  Created by jimmy.yang on 11-2-9.//  Copyright 2011 __MyCompanyName__. All rights reserved.// #import @interface Human : NSObject {    

When using objective-C, you will always encounter some classes in the foundation framework. These classes include nsstring, nsnumber, nsarray, and nsdictionary. These data structures are self-explanatory. Objective-C is famous for its concise and