C + + Fast learning objective-c language Core grammar

This paper discusses the core grammar of language objective-c. This section begins by detailing some specific syntax. As you would expect, the definitions and classes are involved. Classes are not special In Smalltalk, a class is an object with

The use of BASE64 encoded encryption and decryption in IOS objective-c

BASE64 uses commonly used URL ciphertext encoding to pass longer identity information in an HTTP environment. The adoption of BASE64 encoding is not only shorter but also unreadable. The following address is the encrypted Thunderbolt dedicated

Implementation of SHA224/SHA256/SHA384/SHA512 encryption algorithm for iOS development--OBJECTIVE-C __ Algorithm

Previously implemented in the blog SHA1 Security has not met the needs of users, today the implementation of the sha224/sha256/sha384/sha512 attached. The SHA that Secure Hash algorithm (safe hashing algorithm) has many kinds of different bit number

IOS "objective-c microblogging release date format"

The time and date conversion of this style, similar to the microblogging release time, has been sorted and summarized as follows, and has solved so many key questions: (1) Localize the time date string returned by the server (the server may not

Objective-c dictionary use of detailed __objective-c

#import #import "AppDelegate.h" int main (int argc, char * argv[]) { //similar to the map in Java, That is, the key value pair; nsdictionary *dict = @{@ "name": @ "Zhangsan", @ "age": @23}; Print out the whole dictionary; NSLog (@ "%@

[objective-c] Transitions from reference count to Automatic reference count (ARC)

Turn from: https://developer.apple.com/library/mac/releasenotes/ObjectiveC/RN-TransitioningToARC/Introduction/Introduction.html transitioning to ARC release Notes Automatic Reference Counting (ARC) is a compiler feature this provides Automatic

Objective-c "class method/Object Method-Anonymous class-new&alloc init difference"

——————————————————————————————————————————— Class method ① class Method: + The beginning of the method (defined as the process form and the object method, just the + start, which is the only difference) The invocation of the class

Objective-c MacOS running programs with Administrator privileges

Many operations under MacOS require administrator privileges, such as when we run chmod and can use sudo chmod at the command line to request to run with administrator privileges. However, programs written with Xcode cannot be used with sudo.You

Objective-c Arrays and mutable arrays

Knowledge pointsthe focus function of the 1.NSArray class is usedThe key function of the 2.NSMutableArray class uses 3. String segmentation and splicing============================Nsarray, Nsmutablearray1. "Knowledge that needs to be understood"1.1

Objective-c sort

In objective-c, sorting is divided into:1. Sorting objects in the foundation framework2. Sort Custom ObjectsExample: Each student has a score score attribute, according to the score score the student sortCustom Object Student.hStudent.mMain.m#import#

OBJECTIVE-C Integrated Development Environment (IDE) under Windows (RPM)

Objective-c is an Apple software programming language that wants to learn, debug, and have an integrated development environment (IDE) handy. There are three types of methods for building OBJECTIVE-C's integrated development environment:1) using the

"Effective OBJECTIVE-C 2.0" after reading summary of the Five

Written in the previous words:1, from now, this moment, began to work hard, move up!2, "Effective OBJECTIVE-C 2.0" This is a very real book, each chapter with specific examples to inform readers of such reasons!3, the book has been bought for a long

"Effective OBJECTIVE-C 2.0" after reading summary of four

gcd

Written in the previous words:1, from now, this moment, began to work hard, move up!2, "Effective OBJECTIVE-C 2.0" This is a very real book, each chapter with specific examples to inform readers of such reasons!3, the book has been bought for a long

Objective-c method for parsing nsdata data into nsdictionary or Nsarray in the request return

1. If the background returns a dictionary or an array of data types, use the following method to convert directly: { Data into a dictionary where Responseobject is the data returned nsdictionary *resultdictionary = [nsjsonserialization

Objective-c Runtime Programming Guide Chinese Translation

IntroducedOBJECTIVE-C has postponed many decisions from a cheap period and link period to a run-time period. Whenever possible, it does a lot of things dynamically. This means that it requires not only a compiler, but also a runtime system to

OBJECTIVE-C Basic syntax: The difference between an instance variable and a member variable. Example method and class method difference

http://leopard168.blog.163.com/blog/static/16847184420138153296930/http://blog.csdn.net/thdxs/article/details/109883431. The class method belongs to the entire class, not to an object.2. Class methods can access only class member variables, cannot

Objective-c's Run Loop detailed

this article reprinted to http://blog.csdn.net/ztp800201/article/details/9240913For more than a year of iOS development, the deep understanding of iOS and objective-c is still limited, and most of it still stays at the API level, which is a pretty

From Alloc and Allocwithzone in Objective-c.

http://www.justinyan.me/post/1306First, the origin of the problemAll originated in Apple's official documentation for the sample code for Singleton (Singleton): Creating a Singleton Instance.The main controversy is focused on the following paragraph:

Programming with OBJECTIVE-C----Introduction----objective-c Learning (I.)

About OBJECTIVE-COBJECTIVE-C is the primary programming language you use when writing software for OS X and IOS. It's a superset of the C programming language and provides object-oriented capabilities and a dynamic runtime. Objective-c inherits the

Install xcode on Mac OS X and compile objective-C

  In later chapters we will look at how to install and use objective-C on Windows and Linux systems for those that do not have access to Mac OS X. if you are planning to develop iPhone applications (or Mac OS X applications for that matter), however,

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