objective c for dummies

Objetive-C learning _ Block learning notes, objetive-c_block Block: an anonymous function with an automatic variable (local variable. Block: used to save a piece of code and can be called when appropriate. Block essence: struct, which contains a function pointer Block application scenarios: animation, multithreading, set traversal, and network request callback Block format: ^ return value type parameter li

instancevi. Relationship between OC instance object class object meta-Object(1) Each object is an instance of a class.(2) Each object has a pointer to the object named Isa, which points to its class.(3) Each class describes the characteristics of a series of its instances, including a list of member variables, a list of member functions, and so on.(4) Each object can accept the message, and the message list that the object can receive is saved in the class it corresponds to. Copyright NOTICE: T

Yi Wei public platform interface dummies tutorial, Yi Wei micro dummies. Yi Wei public platform interface dummies tutorial, Yi Wei micro dummies Yi Wei public platform interface dummies tutorial part of content: Interface 9 hyperlink. rmvb interface 8 music information. rmvb

Some time ago, during sokcet communication under Objetive-C, when the C ++ program was used as the server, everything was normal. When Java was used as the server, neither party received the data, after reading some documents, sort out the notes 1. Press enter and line feed at the end of the message. When Objetive-C sends data, add "\ r \ n" to the end" _ Datatosend = [nsdata datawithbytes: "This is a

a testing tool is introduced that is not supported by people. People should see the need to improve a specific process, and be aware that the introduction of a specific test tool may ultimately help to accomplish their work more efficiently. If an organization does not sort these three points in order, the sentence "with the test tool, dummies are still dummies" will come true. Or in other words, an organi

introduced that is not supported by people. People should see the need to improve a specific process, and be aware that the introduction of a specific test tool may ultimately help to accomplish their work more efficiently. If an organization does not sort these three points in order, the sentence "with the test tool, dummies are still dummies" will come true. Or in other words, an organization that only i

atomic operation. If multipleWhen a thread calls the setter at the same time, one thread does not appear before the entire setter statement is executed, and the otherWhen a thread starts executing a setter, it is the same as the method ends with a lock.Nonatomic: The atomicity of Setter/getter is not guaranteed, and data may be problematic in multithreaded situations.nonatomic, non-atomic access, non-synchronous, multi-threaded concurrent access improves performance. First release the originalv

C-language dummies (1): nested loops-program structure, dummies Loop statement nesting a loop structure can contain another loop, called loop nesting, or multiple loops. The nested loop is a double loop. The outer loop is called an external loop, and the inner loop is called an internal loop. --------- I don't know where the basic concepts come from 　　 　　This is the first blog of the baby. I will not ask fo

the file from the remote host to the local computer16: File Download successful17: If you want to modify the information of the account (such as: Rename the account name, delete the account, etc., do not forget to save), you can follow the following to enter the change account interface18: Select the corresponding account-right--select the corresponding action19: This is the part of the help document about creating new accounts and modifying accounts, want to know more about the content, it is

This article uses the popular saying "dumb camera" to create the word "dumb Ubuntu", which means automatic or semi-automatic Ubuntu. In this case, the actual level of Ubuntu is not low! Is this true? As you know, the actual users of dummies Ubuntu may not be really dummies. Recently, the Beta3 version of Ubuntu9.10 has just been released. From the perspective of it, the beautiful faces are indeed extraordin

081107 Dummy, stupid. Chapter chapter. Welcome to ASP. NET 2.0 everyday apps for Dummies, the book that teaches ASP. NET 2.0 WEB programming by example. In the book that you'll find eight complete ASP. NET applications. We're not talking trivial (mediocre) hello-world-type applications here. Instead, they're real-world applications like shopping carts and discussion (discussion) Forums (forum ). You can use any of them as-is, or modify them as you see

J. Timothy King wrote a great article: Twelve benefits of writing unit tests first ). Unfortunately, what he said at the end of the article is completely superfluous. However, if you don't want to get rid of the old habit of writing code first, if you think that self-stick is more important than designing good software, Well, I am sorry for you. Using your pity on people who do not agree with you is not the most effective way to promote your claim. Let's take a look at Mr t's example. He bega

Provides various official and user-released code examples. For code reference, you are welcome to exchange and learn about the complexity of the official permission system. Beginners are often confused and confused. This is my dummies version transformation. Please refer to your tasting. The official rbac. I read a lot of articles, although I finally understood it, but it does consume a lot of brain cells. It also requires database support. It is diff

I am a postmaster for server dummies. I would like to ask if there is any server one-click website opening software to enable FTP and MYSQL databases with one click, space expiration reminder and other functions ------ solution ------------------ you have a good study, it is not difficult to use appserv, all is the next step. Nagix is the most technically demanding one. Server dummies website software I am

his "quasi-Pearl" message ." That is, the fat horse is no longer worth a thousand dollars. From the beginning of Yuanming, the word "dirty" gradually evolved into a bad, mean, ugly meaning, especially in opera and novels. Later, and gradually evolved into the meaning of being unclean and unclean. No later than the Qing Dynasty, "dirty" has been finalized as the meaning of today's words. The author Li jiantang's book "The old saying goes" dirty, the semantics of "dirty" has continued until today

I'm a Dummies. Today I want to talk about how to use log4net, of course. Under. net. First, make sure that you have downloaded the log4net. dll file andProgramIn the bin folder, otherwise ...... 1: In web. configAdd: 2:Add: 3: Finally, define a log object in the Aspx. CS or CS class to record the log: Private Static log4net. ilog log = log4net. logmanager. getlogge

Are you a normal dummies? Come out first: If you wait for the bus as usual after work on a certain day, but it has not arrived more than half an hour, it is clear that something has happened on the road. At this time, your colleague Tom also came to wait for the car. He proposed to take a taxi home when he saw your situation. You don't think this is a good idea, but you will find that your direction is the opposite of that of Tom. Tom hesitated and d

The db2 Tutorial we are reading is: DB2 common dummies 1000 (6 ). 149. ATAN2 ()Returns the arc tangent of the angle X and Y coordinates in radians.SELECTATAN2 (0.5, 0.9) FROMBSEMPMS;　　150. BIGINT ()Returns the 64-bit integer representation of a number or string in an integer constant.SELECTBIGINT (EMP_NO) FROMBSEMPMS;　　151. CEILING () ORCEIL ()Returns the smallest integer value greater than or equal to the parameter.SELECTCEILING (3.56) FROMBSEMPMS;SE

Linux is a lack of dummies-general Linux technology-Linux technology and application information. The following is a detailed description. Today, when talking to friends about Linux, she said that the Linux founder LT said "Gnome treats users as fools" and urges people to use KDE. I think this is the sorrow of Linux. Most computers are also potential users of Linux who are not familiar with computers. Why should they be familiar with computers, what s

Original Blu-ray Disc + mandarin dubbing + Chinese Subtitle and commentary subtitle retention pop-up menu for Dummies Tutorial I found a simple and easy-to-understand tutorial, and forwarded it so that some basic colleagues could learn about it. HereThanksThe hard work of the original author! 1. Obtain the title source.FriendWhen I went abroad for a business trip, I took a few Blu-ray discs back. In this tutorial, I used the movie "The Last