Gang Of Four Pdf Download
What is Gang of Four (GOF)? In 1994, four authors Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides published a book titled Design Patterns - Elements of Reusable Object-Oriented Software which initiated the concept of Design Pattern in Software development. These authors are collectively known as Gang of Four (GOF). According to these.
Design patterns are solutions to software design problems you find again and again in real-world application development. Patterns are about reusable designs and interactions of objects.
The 23 Gang of Four (GoF) patterns are generally considered the foundation for all other patterns. They are categorized in three groups: Creational, Structural, and Behavioral (for a complete list see below).
To give you a head start, the C# source code for each pattern is provided in 2 forms: structural and real-world. Structural code uses type names as defined in the pattern definition and UML diagrams. Real-world code provides real-world programming situations where you may use these patterns.
A third form, .NET optimized, demonstrates design patterns that fully exploit built-in .NET 4.5 features, such as, generics, attributes, delegates, reflection, and more. These and much more are available in our .NET Design Pattern Framework 4.5. You can see the Singleton page for a .NET 4.5 Optimized example.
Creational Patterns | |
Abstract Factory | Creates an instance of several families of classes |
Builder | Separates object construction from its representation |
Factory Method | Creates an instance of several derived classes |
Prototype | A fully initialized instance to be copied or cloned |
Singleton | A class of which only a single instance can exist |
Structural Patterns | |
Adapter | Match interfaces of different classes |
Bridge | Separates an object’s interface from its implementation |
Composite | A tree structure of simple and composite objects |
Decorator | Add responsibilities to objects dynamically |
Facade | A single class that represents an entire subsystem |
Flyweight | A fine-grained instance used for efficient sharing |
Proxy | An object representing another object |
Behavioral Patterns | |
Chain of Resp. | A way of passing a request between a chain of objects |
Command | Encapsulate a command request as an object |
Interpreter | A way to include language elements in a program |
Iterator | Sequentially access the elements of a collection |
Mediator | Defines simplified communication between classes |
Memento | Capture and restore an object's internal state |
Observer | A way of notifying change to a number of classes |
State | Alter an object's behavior when its state changes |
Strategy | Encapsulates an algorithm inside a class |
Template Method | Defer the exact steps of an algorithm to a subclass |
Visitor | Defines a new operation to a class without change |
History of the People's Republic of China (PRC) |
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History of |
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The Gang of Four (simplified Chinese: 四人帮; traditional Chinese: 四人幫; pinyin: Sìrén bāng) was a political faction composed of four Chinese Communist Party officials. They came to prominence during the Cultural Revolution (1966–76) and were later charged with a series of treasonous crimes. The gang's leading figure was Jiang Qing (Mao Zedong's last wife). The other members were Zhang Chunqiao, Yao Wenyuan, and Wang Hongwen.[1]
The Gang of Four controlled the power organs of the Communist Party of China through the later stages of the Cultural Revolution,[citation needed] although it remains unclear which major decisions were made by Mao Zedong and carried out by the Gang, and which were the result of the Gang of Four's own planning.
The Gang of Four, together with disgraced general Lin Biao who died in 1971, were labeled the two major 'counter-revolutionary forces' of the Cultural Revolution and officially blamed by the Chinese government for the worst excesses of the societal chaos that ensued during the ten years of turmoil. Their downfall on October 6, 1976, a mere month after Mao's death, brought about major celebrations on the streets of Beijing and marked the end of a turbulent political era in China.
Their fall did not amount to a rejection of the Cultural Revolution as such. It was organized by the new leader, Premier Hua Guofeng, and others who had risen during that period. Significant repudiation of the entire process of change came later, with the return of Deng Xiaoping at the 11th National Congress of the Communist Party of China.[2] and Hua's gradual loss of authority.[3]
Formation[edit]
The group was led by Jiang Qing, and consisted of three of her close associates, Zhang Chunqiao, Yao Wenyuan, and Wang Hongwen. Two other men who were already dead in 1976, Kang Sheng and Xie Fuzhi, were named as having been part of the 'Gang'. Chen Boda and Mao Yuanxin, the latter being Mao's nephew, were also considered some of the Gang's closer associates.
Most Western accounts consider that the actual leadership of the Cultural Revolution consisted of a wider group, referring predominantly to the members of the Central Cultural Revolution Group. Most prominent was Lin Biao, until his purported flight from China and death in a plane crash in 1971. Chen Boda is often classed as a member of Lin's faction rather than Jiang Qing's.[4]
Role[edit]
At the beginning of the Cultural Revolution, on November 10, 1965, Yao Wenyuan in one of Yao's most famous pieces of writing published an article 'On the New Historical Beijing Opera 'Hai Rui Dismissed from Office' in Wenhuibao criticizing the play Hai Rui Dismissed from Office.[1] The writing argues that portraying Peng Dehuai's position sympathetically was an attack on Chairman Mao's Great Leap Forward which led Mao to purge Peng.[5][6] This article is cited as launching the Cultural Revolution.[7]
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Jiang Qing staged revolutionary operas during the Cultural Revolution and met with the Red Guards.[8][9]
The removal of this group from power is sometimes considered to have marked the end of the Cultural Revolution, which had been launched by Mao in 1966 as part of his power struggle with leaders such as Liu Shaoqi, Deng Xiaoping and Peng Zhen. Mao placed his wife Jiang Qing, a former film actress who before 1966 had not taken a public political role, in charge of the country's cultural apparatus. Zhang, Yao and Wang were party leaders in Shanghai who had played leading roles in securing that city for Mao during the Cultural Revolution.
Around the time of the death of Lin Biao, the Cultural Revolution began to lose momentum. The new commanders of the People's Liberation Army demanded that order be restored in light of the dangerous situation along the border with the Soviet Union (see Sino-Soviet split). Premier Zhou Enlai, who had accepted the Cultural Revolution, but never fully supported it, regained his authority, and used it to bring Deng Xiaoping back into the Party leadership at the 10th Party Congress in 1973. Liu Shaoqi had meanwhile died in prison in 1969.
Near the end of Mao's life, a power struggle occurred between the Gang of Four and the alliance of Deng Xiaoping, Zhou Enlai, and Ye Jianying.
Downfall[edit]
Zhou Enlai died in January 1976, and in the subsequent months of mourning, a power struggle occurred in the top echelons of the party. The reformist Deng was named acting premier, while the Gang of Four began using their newspapers to criticize Deng and to mobilize their urban militia groups. Much of the military and party security remained under the control of the party elders of the Central Committee, who generally took a cautious role in mediating between the reformist Deng and the radical Gang of Four. They agreed to the removal of Deng from office after the April Tiananmen Incident, but took steps to ensure that Deng and his allies would not be personally harmed in the process.
On September 9, Chairman Mao died. For the next few weeks the Gang of Four retained control over the government media, and many articles appeared on the theme of 'principles laid down' (or 'established') by Mao near the end of his life.[10][11] (The words 'principles laid down' were themselves supposedly a quotation from Mao, but their canonical status was in dispute.[10]) Urban militia units commanded by supporters of the radical group were placed on a heightened state of readiness.[12][11]
Premier Hua Guofeng attacked the radicals' media line at a Politburo meeting in late September;[13] but Jiang Qing emphatically disagreed with Hua, and she insisted that she be named as the new party Chairman.[13] The meeting ended inconclusively.[13] On October 4 the radical group warned, via an article in the Guangming Daily, that any revisionist who interfered with the established principles would 'come to no good end'.[11]
The radicals hoped that the key military leaders Wang Dongxing and Chen Xilian would support them, but it seems that Hua won the Army over to his side. On 6 October 1976, Hua had the four leading radicals and a number of their lesser associates arrested. Han Suyin gave a detailed account of their overthrow:
An emergency session of the Politburo was to take place in the Great Hall of the People that evening. Their presence was required. Since Wang Dongxing had been their ally, they did not suspect him.. As they passed through the swinging doors into the entrance lobby, they were apprehended and led off in handcuffs. A special 8341 unit then went to Madam Mao's residence at No. 17 Fisherman's Terrace and arrested her. That night Mao Yuanxin was arrested in Manchuria, and the propagandists of the Gang of Four in Peking University and in newspaper offices were taken into custody. All was done with quiet and efficiency. In Shanghai, the Gang's supporters received a message to come to Beijing 'for a meeting'. They came and were arrested. Thus, without shedding a drop of blood, the plans of the Gang of Four to wield supreme power were ended.[14]
According to historian Immanuel C.Y. Hsü, the operation was not completely bloodless — Wang Hongwen killed two of the guards trying to capture him, and was wounded himself before being subdued.[15]
Beginning on 21 October, nationwide denunciations of the Gang began, which culminated in the December release of files related to the Gang's alleged crimes to the public. The party issued a denunciation of the Gang of Four as 'appearing to be leftist, but practically rightist'. Government media blamed the Gang of Four and Lin Biao for the excesses of the Cultural Revolution. Celebrations were prominent and not limited to the streets of Beijing and other major cities. During the nationwide 'Movement of Exposition, Criticism and Uncovering (揭批查运动)' millions of formerly 'rebel faction (造反派)' red guards were publicly criticized as they were thought to be related to the Gang of Four.
Aftermath[edit]
Immediately after the arrests, Premier Hua Guofeng, Marshal Ye Jianying, and economic czars Chen Yun and Li Xiannian formed the core of the next party leadership.[16] These three, together with the rehabilitated Deng Xiaoping and Wang Dongxing, were elected party Vice Chairmen at the August 1977 National Party Congress.[17]At the politburo level, the membership of all four living marshals, seven other generals and at least five others with close military ties reflected the deep concern for national stability.
Trial[edit]
In 1981, the four deposed leaders were subjected to a show trial and convicted of anti-party activities. During the trial, Jiang Qing in particular was extremely defiant, protesting loudly and bursting into tears at some points. She was the only member of the Gang of Four who bothered to argue on her behalf. The defence's argument was that she obeyed the orders of Chairman Mao Zedong at all times. Zhang Chunqiao refused to admit any wrongdoing. Yao Wenyuan and Wang Hongwen expressed repentance and confessed their alleged crimes.[18]
The prosecution separated political errors from actual crimes. Among the latter were the usurpation of state power and party leadership; the persecution of some 750,000 people, 34,375 of whom died during the period 1966–1976.[19] The official records of the trial have not yet been released.
Jiang Qing and Zhang Chunqiao received death sentences that were later commuted to life imprisonment, while Wang Hongwen and Yao Wenyuan were given life and twenty years in prison, respectively. All members of the Gang of Four have since died; Jiang Qing committed suicide in 1991, Wang Hongwen died in 1992, and Yao Wenyuan and Zhang Chunqiao died in 2005, having been released from prison in 1996 and 1998, respectively.
Supporters of the Gang of Four, including Chen Boda and Mao Yuanxin, were also sentenced.
'Little Gang of Four'[edit]
In the struggle between Hua Guofeng's and Deng Xiaoping's followers, a new term emerged, pointing to Hua's four closest collaborators, Wang Dongxing, Wu De, Ji Dengkui and Chen Xilian.[20] In 1980, they were charged with 'grave errors' in the struggle against the Gang of Four and demoted from the Political Bureau to mere Central Committee membership.[citation needed]
Gang Of Four Pdf Download Full
'New Gang of Four'[edit]
In the Xi Jinping era, some commentators and political observers dubbed the loose political grouping of former security chief Zhou Yongkang, former Central Military Commission vice-chairman Xu Caihou, former Chongqing party chief Bo Xilai, and former General Office chief Ling Jihua as the 'New Gang of Four'.[21] All four were investigated for corruption-related offences between 2012 and 2014. This group had little in common with the original Gang of Four and whether the new 'Gang' truly had a coherent set of shared political interests was not clear.[21]
Hong Kong's 'Gang of Four'[edit]
In 2013, Anson Chan Fang On-sang, Martin Lee Chu-ming, Cardinal Joseph Zen Ze-kiun and Jimmy Lai Chee-Ying, had been named as ‘Hong Kong's 'Gang of Four'’ by the China Daily, due to alleged foreign connections, including, in Chan's case, 'secret meetings with some of her former subordinates of the colonial era.'[22]
In 2019, Anson Chan, Martin Lee and Jimmy Lai, had again been labeled as part of a ‘Gang of Four’ by various Chinese state owned media, including CGTN, CCTV and China Internet Information Center; the fourth member in this instance was replaced by Albert Ho Chun-yan. The four were called a gang, because of their ties to American politicians and their support for what the Chinese government deems subversive and destabilising elements of Hong Kong's society[23][24][25], after Anson Chan and Martin Lee were caught meeting with American Consulate diplomat Julie Eadeh in a widely published photo scandal during the time of the 2019 Hong Kong anti-extradition bill protests[26] and other photos surfaced of Mike Pence meeting with Anson Chan and Jimmy Lai.[27]
Popular culture[edit]
English post-punk band Gang of Four are named after the faction.[citation needed]
See also[edit]
- Soviet Union's Anti-Party Group
- Poland's Natolin faction
References[edit]
- ^ ab'Yao Wenyuan'. The Economist. ISSN0013-0613. Retrieved 2016-05-22.
- ^'1977: Deng Xiaoping back in power'. 22 July 1977. Retrieved 18 January 2018 – via news.bbc.co.uk.
- ^'Hua Guofeng, Transitional Leader of China After Mao, Is Dead at 87'. The New York Times. 21 August 2008. Retrieved 18 January 2018.
- ^Glossary of Names and Identities in Mao's Last Revolution, by Roderick MacFarquhar and Michael Schoenhals, Harvard University Press 2006.
- ^MacFarquhar, Roderick (1997-01-13). The Politics of China: The Eras of Mao and Deng. Cambridge University Press. ISBN9780521588638.
- ^Domes, Jürgen (1985-01-01). Peng Te-huai: The Man and the Image. Stanford University Press. ISBN9780804713030.
- ^Tsou, Tang (1999-04-15). The Cultural Revolution and Post-Mao Reforms: A Historical Perspective. University of Chicago Press. ISBN9780226815145.
- ^Jiaqi, Yan; Gao Gao (1996). Turbulent Decade: A History of the Cultural Revolution. University of Hawaii Press. pp. 56–64. ISBN0-8248-1695-1.
- ^Lu, Xing (2004). Rhetoric of the Chinese Cultural Revolution: the impact on Chinese thought, culture, and communication. University of South Carolina Press. pp. 143–150. ISBN1570035431.
- ^ abHsü, Immanuel Chung-yueh (1990), China Without Mao: the Search for a New Order, Oxford University Press, p. 15, ISBN0-19536-303-5
- ^ abcBaum, Richard (1996), Burying Mao: Chinese Politics in the Age of Deng Xiaoping, Princeton University Press, p. 40, ISBN0-69103-637-3
- ^Hsü, Immanuel Chung-yueh (1990), China Without Mao: the Search for a New Order, Oxford University Press, p. 13, ISBN0-19536-303-5
- ^ abcHsü, Immanuel Chung-yueh (1990), China Without Mao: the Search for a New Order, Oxford University Press, p. 16, ISBN0-19536-303-5
- ^Eldest Son: Zhou Enlai and the Making of Modern China, Han Suyin, 1994. page 413.
- ^Hsü, Immanuel Chung-yueh (1990), China Without Mao: the Search for a New Order, Oxford University Press, p. 26, ISBN0-19536-303-5
- ^http://www.chaos.umd.edu/history/prc4.html and 'Archived copy'(PDF). Archived from the original(PDF) on 2008-05-28. Retrieved 2008-05-05.CS1 maint: Archived copy as title (link), p.26-27
- ^'Political Leaders: China'. Terra.es. Archived from the original on 2011-08-06. Retrieved 2011-07-22.
- ^Zheng, Haiping (2010). 'The Gang of Four Trial'. Retrieved 2017-12-31.
- ^'China the Four Modernizations, 1979-82'. Country-studies.com. Retrieved 2011-07-22.
- ^Harding, Harry (2010). China's second revolution: Reform after Mao. Brookings Institution Press.
- ^ ab'China's Xi Dismantles the 'New Gang of Four' With Probe of Hu's Aide'. Bloomberg. December 23, 2014.
- ^'What's Chan up to?'. China Daily. 2013-04-26. Retrieved 2019-08-14.
- ^'Gang of 4': Who is misleading the young in HK? 揭秘禍港四人幫. CGTN. 15 August 2019.
- ^Hong Kong Gang of Four- Lee Chu-ming. CCTV English. Retrieved 23 August 2019.
- ^HK's Gang of Four. China.org.cn. Retrieved 23 August 2019.
- ^'美駐港總領事暗會李柱銘陳方安生'. Ta Kung Pao. Retrieved 23 August 2019.
- ^'「眾志」密會美國領事 主動獻計「制裁」香港'. Wen Wei Po. Retrieved 14 August 2019.
External links[edit]
- 'Trial of China's Gang of Four', BBC