Objective-C

OBJECTIVE-C Integrated Development Environment (IDE) under WindowsCategory: Objective-c2012-04-20 21:54 26631 people read reviews ($) Collection report windowside compiler CompilerlibrarysystemObjective-c is an Apple software programming

Create an immutable Dictionary object// Facilitation Builder Creation nsdictionary *dic = [nsdictionary dictionarywithobjectsandkeys:@ "Zhonger", @ "name2", @ "Taixu", @ "name1", @ "Caicai", @ "Name3", Nil] ;// Initialize Method //Give value to

1. Is it possible to put more time-consuming operations in the notification Center?  Notice in which line Cheng, then the processing of the notification event is carried out in the same thread;if the asynchronous line Cheng the notification, then

The following is only for individual reading notes, to record the use of pages. Original address: HTTPS://GITHUB.COM/OA414/OBJC-ZEN-BOOK-CN thanks! One, one case problemRefer to the previous single abuse article.Http://www.cnblogs.com/yaann/p/4661909

SuperIn Objective-c, if we need to invoke a method of the parent class in a method of a class, we usually use Super, as follows:@interface MyViewController: UIViewController@end@implementation MyViewController- (void)viewDidLoad { [super

objective-c (OBJC) is a clean language. It adds a complete object-oriented feature on the basis of C, but only introduces a limited new syntax ( which is really limited compared to C + +). Another important feature of OBJC is "dynamics", which can

OutlineNsarrayNsmutablearrayQuick EnumerationNsarray　　Nsarray is a static array, which is a non-variable group that cannot be added, deleted, or modified once it is created. Nsarray inherits from NSObject, which manages a collection of ordered

　Everything is possible.the protocol defines a set of methods for other classes to implement. The protocol itself is not a class. a protocol is a set of methods that are not implemented. A protocol is a group that has a certain correlation. the

Category categories Relatedcategory是OC的特有的语法Declaration of classification@interface ClassName (CategoryName)NewMethod; //在类别中添加方法 //不允许在类别中添加变量@end ClassName: Which class extension method needs to be given CategoryName: Name of

The main content of this chapter will be gathered at runtime to handle member variables and attributes. Before discussing this, let's start with an important concept: type coding.Type encoding (Type Encoding)As a complement to runtime, the compiler

Original link: http://blog.leichunfeng.com/blog/2015/06/26/objective-c-associated-objects-implementation-principle/ We know that in objective-c, you can add attributes to an existing class by category, but you can't add an instance variable, which

Preface: Because I want to high imitation an app, extract asserts from the app all the picture files, filenames with ~iphone This interference name, in order to remove this ~iphone this string, so I wrote a simple answer to the batch change all the

New is rarely used in real-world development, and generally we see [[ClassName alloc] init], but it doesn't mean you won't touch new, you'll see [ClassName new] In some code, and when you go to an interview, is also likely to be asked this

make a simple nine Gongge:The source code is as follows:1 #import "ViewController.h"2 3 @interfaceViewcontroller ()4 5 @end6 7 @implementationViewcontroller8 9- (void) Viewdidload {Ten [Super Viewdidload]; One A //Create a nine grid -Nsinteger

Shimen the main contribution of the Lord, respect the author's labor results. Please do not reprint. If the article is useful to you, you are welcome to donate it to the author. Support Shimen Master, donate amount arbitrarily. Heavy on the mind ^_

1. [] means sending a message [Receiver message] is converted by the compiler to:Objc_msgsend (receiver, selector)If a parameter is includedObjc_msgsend (receiver, selector, arg1, arg2, ...) 2. Runtime Terminology The instance

C # has written that C # is particularly handy for reading and writing the properties of an object through reflection, and can be used to dynamically control an object in the form of a string. In fact, in the OBJC, we can be more advanced point, do

Knowledge points1. Preliminary knowledge of OC2.xcode use3. Object-oriented programming ideas, classes and objects4. Definition and use of classes5. Instantiation of a class--object6. Declaration and implementation Phase separation===================

Nil is used to assign values to objects (any object of object-c is of type ID), NULL assigns any pointer, null and nil are not interchangeable, nil is used for class pointer assignment (in Object-c, class is an object, is an instance of class

OverviewSince the launch of the WWDC 2015 and the Open source Swift 2.0, everyone's enthusiasm for Swift has soared again, while the envious startups ' friends talk about Swift's new features, as well as many developers who still need to stick to