Objective-C

In the Foundation framework in Objective-c, file operations are implemented by the Nsfilemanager class.Here's an example of how to create a file, write to a file, and read the contents of a file:- (void) testfilecreate{Nsfilemanager*filemanager

[Master Objective-c] Blocks (block)Reference book: "Proficient objective-c" "Beauty" Keith LeeDirectory Proficient in block objective-c Directory Syntax for blocks The lexical range of a block Memory management

Category Introduction　　In everyday development, you may encounter the need to add methods to a class. For example, you need to add a printing method to the NSString class. Of course, we can create a new class such as TestString and inherit the

There is a certain C + + or Java Foundation, over the OC syntax can be, are interlinked, personally think the difficulty is OC memory management, although there is ARC, but also need to learn, because the old software maintenance.Based on the C

Dynamic languageOC is a dynamic language, and its method, the type of object, is to be determined only when it is run. So this makes OC a powerful mechanism for associating objects.Associating objectsThe so-called associative object, in fact, is

Abstract Factory modeUnderstand the factory method pattern, in fact, there are many similarities between abstract factory and factory method pattern. Abstract factories are also the separation of client object creation and logic code, but abstract

This article mainly introduces the implementation details of the Objective-c object model and the support for ISA swizzling and method swizzling in the Objective-c language object model. Hopefully this article will deepen your understanding of the

In the Cocoa Foundation, Nsset and Nsmutableset, like the nsarray functional nature, are used to store objects that belong to a collection. However, Nsset and Nsmutableset are unordered, guaranteeing the uniqueness of the data and will not have any

Initialization convenience initialization and specifying initialization convenience initialization mode convenient initialization mode one-(id) initWithFormat:(NSString *) format,...; Initializes a new string as the result of the

recently saw a lot of block related articles, are saying block how to use, writing is very exciting. Blogs:What to note about block programming (use related)http://www.cocoachina.com/macdev/cocoa/2013/0527/6285.htmlprobe into block implementations

not change constant Name Description M_pi Pi (=π) M_pi_2 1/2 of Pi (=Π/2) M_pi_4 1/4 of Pi (=Π/4) M_1_pi =1/π M_2_pi =2/π

When you create an object using new, the system actually performs two steps in the background:The first step: Allocate memory for the object, that is, the object obtains a memory block to hold the instance variable;Second part: The Init method is

1//Initialize an empty dictionary2//nsdictionary *dictionary = [[Nsdictionary alloc] init];3//Initialize an empty code4//nsdictionary *dictionary1 = [Nsdictionary dictionary];5//add a pair of key values while initializing6//Nsdictionary *dictionary2

Original link: The official raywenderlich.com objective-c style guide Original Author: raywenderlich.com Team Version: raywenderlich.com objective-c Coding Specification Translator: Sam Lau As I'm preparing to mimic the hungry app, there may

Artifice refers to a skill and a product that is too kit and useless.Reprint please indicate the source Uxyheaven csdn BlogIn fact, this technique is very useful in certain circumstances, and the requirements are not high.We had an interface 1,

This post consists of: http://www.sollyu.com/objective-c-synchronization-requests-requests-for-asynchronous-requests-get-and-post-requests/Description1 The synchronization request can request data from the Internet, once the synchronization request

Based on the C language, a minimum object-oriented syntax is added, which is fully compatible with the C language and can be incorporated into the C language code in the OC code, even C ++ code can use OC to develop application file extensions for

Objective-the C language is designed as an exquisite, object-oriented, and easy-to-use computer language. It is fully based on the Standard C language and has made the smallest but powerful extension language. This extended language draws on the

From: http://www.cnblogs.com/lm3515/archive/2010/12/20/1911135.html  Objective-C basic tutorial-learning Summary Outline: Introduction Notes compared with the C Language Objective-C advanced features Development Tool introduction (cocoa toolkit

I have seen many development languages, including C, C ++, Java, Python, Ruby, Lua, and PHP, basically, when I first read a new language, I can quickly guess the syntax characteristics of the language. However, when I first read objective-C, I was