Objective-C basics: Basic knowledge of Object-Oriented Programming (OOP) (1) -- indirect, objective-coop
Since Cocoa is based on the concept of OOP and Objective-C is also an object-oriented programming language, it is necessary to frequently discuss the concept of OOP when learning Objective-C.
0x01 what is indirect?
Indirection is a key concept of OOP. It can be understood as "indirectly obtaining a value through a pointer in code, rather than dire
Loading editor... doom resurrection and Wolfenstein 3D classic are only the beginning for id software on the iPhone, with everything from Wolfenstein RPG to the upcoming rage making their way to Apple's platform. as a matter of fact, Wolfenstein RPG has been completed for quite some time. as ID's John carmark explains it, his excitement over getting
overstocks cost is too high, and the majority of customers are in the project after the acceptance of the payment, which requires a large amount of pre-payment, for an entrepreneurial company, it is really difficult.This time I began to calm down, pre-business market analysis, competitor analysis, market planning and other pre-preparation is too important, really wrong direction, efforts in vain. In the blink of an eye, by the end of the year, only 7 or 80,000 dollars were earned, and our spend
Today, in the virtual machine, we found that the remaining disk space is less than 10%, a total of 30 GB of disk space, less than 2 GB. If we create an RMAN full backup for ORACLE, there will be little left, so I want
Today, in the virtual machine, we found that the remaining disk space is less than 10%, a total of 30 GB of disk space, less than 2 GB. If we create an RMAN full backup for ORACLE, there will be little left, so I want
Today, in the virtual machine, we found that the remaining
# 工作簿, 工作表,单元格#workbook ,sheet ,cell# 灵活擦欧总各种对象,进行修改‘# 编辑样式%cd D:\python全站\officeD:\python全站\office# pip install openpyxlimport openpyxlwb = openpyxl.load_workbook(‘coop.xlsx‘) # 加载创建的表格coop.xlsxwb.get_active_sheet()c:\users\coop\miniconda3\envs\coop\lib\site-packages\ipykernel_launcher.py:1: DeprecationWarning: Call to deprecated function get_active_sheet (Use the .active property). """Entry point for la
4333:jsoi2012 the test of the wise time
limit:10 Sec Memory limit:256 MBsubmit:68 solved:18[Submit] [Status] [Discuss]
Description A.D. 1371, the emperor of the Dajian temple in the Arctic pavilion, just a few years, the chicken coop has built a king temple, Kuan Kung temple, True Zhen Wu Miao, Hero Temple, Wang, all the temple, Bian Shenqiu Pot temple, Martyrs ' Temple, Liu Yueyue temple, Cao Wuhi Temple, a total of 10 temples, collectively
http://blog.csdn.net/hsuxu/article/details/9876983Before emphasizing so much about the Linux kernel poll and epoll, just want to let everyone first have a knowledge:The selectors in Java NiO rely on these system calls from the operating system kernel, and we'll only talk about the NIO implementations associated with the Linux kernel, and, of course, windows or other operating system implementations are broadly similar, and I believe you can comprehend by analogy.Then, this article from here will
Software code library
Reading only is certainly not enough. Reading excellent open source code will be of great help. My favorites are id Software's 3D engine code library: Doom, Quake, Quake2, Quake3, Wolfenstein 3D iPhone, and Doom iPhone. When I read this code, I will write my own memo log. I will sort the logs and write them into technical articles (Doom, Quake, Wolfenstein 3D iPhone, and Doom iPhone
Star Trek (Star Trek) AND SOME War simulation games. However, the masses still waited until a computer game named Pong appeared to start to appreciate the charm of computer games. Nolan Bushnell designed Pong, a single player that truly started the entire video gaming industry overnight. The Atari brand was born at that time.Since then, it has been around 1976 ~ In 1978, TRS-80, Apple, Atari 800 and other computers were put into the market, they are the first generation of computers that consum
information in the certificate.
Let's take a look at the structure of the Subject name: DN. this knot is a set of attributes. each attribute has a property name and a property value. it is used to indicate "who I am", that is, who issued the certificate to, and who owns the public key corresponding to the certificate.
A string is usually used to represent the DN structure. This string describes the types and values of each attribute in this structure:
C = cn; S =
Beijing
; L =
iPad client created using HTML5 and Phonegap (Cordova ).(Itunes link) (source code)
76. Tweejump-Platform jumping game hosted red by Icy Tower. Utilizes Cocos2D.(Itunes link) (source code)
77. Tweetee-Enhanced version of the Natsulion Twitter Client.(Itunes link) (source code)
78. Tweetero-Basic twitter client with image uploading.(Itunes link) (source code)
79. Vim-The classic highly retriable UNIX text editor ported to iOS.(Itunes link) (source code)
80. ViralFire-Unique game where you are a
development of the game system of Ding Mao Jin Chicken farm ( Yang elder sister:136*027*9-9492 micro-electric ) Ding Mao Golden Chicken Farm game development, Ding Mao Jinfeng Chicken financial system APP project development, Ding Mao Golden Chicken Farm Management System source code development operation, Ding Mao Jinfeng chicken New Farm model software development, Ding Mao Jin Chicken financial system development How much moneyDing Mau Jin chicken is to invest in 268 yuan, registered an accou
International news, a foreign community website on the "Software history of the greatest ten programmers" made a selection, the results are as follows:
1,john Carmack (John Carmack)
John is the godfather of the programmer. He has worked hard to overthrow the world's fast-industrializing barriers and, while leading the wave of the times, can still make research a part of the game, and its contribution is awe-inspiring. His innovations in computer graphics have brought us
libraries: jQuery 9 , berts breakdown ( game address: http://www.paulbrunt.co.uk/bert/ ) Another strong to the reverse days of JavaScript Horizontal version of the game, under the performance of Chrome has been similar to the same Flash game. Dependent libraries: none Js-wars (game address: http://29a.ch/jswars/ ) The horizontal version of the Lightning shooting game, seems to use JavaScript game development of the guys are very like the horizontal board game ... The author wrote
Ten free Linux3D games-general Linux technology-Linux technology and application information. For more information, see the following. Linux users can play 3D games far less than Windows, but there is no shortage of excellent products. Ten free Linux 3D games are listed here, most of which are cross-platform games and do not require "Wine" to run ". Many of them are well-known and have long been introduced, such as US Army, Tremulous, Tux Racer, Nexuiz, and Alien Arena 2007. In addition:
True
of Orion 3 modMedal of Honor: Allied assult pk3Monte Christo zipOutfront PakPackmania 2 AliPerimeter PakQuake 3 pk3Return to Castle Wolfenstein pk3Revenant RVI rvm RVRRichard burns rally rbzRiyunet/riyunet Xtreme zip datSabotain zipSerious Sam groShadow Warrior SHRShark: hunting the Great White zipfsSoldier of Fortune 2 pk3Swarm datS. W. a.t 3 resSystem Shock 2 CRFTerminator 3 podThe fall-Last days of Gaia UBNThief: The Dark Age CRFThief 2: The metal
1, John Carmack (John Carmack)
John is
Program Employee
Godfather. He has been striving to overturn the obstacles to the rapid industrialization of the world, leading the wave of the times while still making research achievements part of the game, and its contribution is awesome. In terms of computer graphics
Innovation
It brings us Wolfenstein 3D, doom quake.
2, Linus Torvalds (Linus Torvalds)
The father of Linux, he wants to create
1, John Carmack (John Carmack)
John isProgramMember godfather. He has been striving to overturn the obstacles to the rapid industrialization of the world, leading the wave of the times while still making research achievements part of the game, and its contribution is awesome. His innovations in computer graphics have brought us Wolfenstein 3D, doom quake.
2, Linus Torvalds (Linus Torvalds)
The father of Linux, he wants to create a Unix-like ope
HTML5 is developing html. the next major change to the core markup language of the World Wide Web.In addition, suchElementOfHeader,Section, footer, etc,
A canvas is a rectangular area where you can use JavaScript to draw images or other visual images on a webpage.Although HTML5 is a W3C recommendation, people have begun to use it,
Today, I will share with you some very powerful HTML5 game demos to demonstrate the potential of HTML5 canvas.
Agent 008 ball
Z-type
RGB invaders
Pacman
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