The Imperative Programming Paradigm Philosophy Essay

The Imperative Programming Paradigm Philosophy Essay The imperative programming paradigm is the oldest and the most traditional one. It has grown from machine and assembler languages, whose main features reflect the John von Neumanns principle of computer architecture. An imperative program consists of explicit commands and calls of procedures to be consequently executed; they carry out operations on data and modify the value of program variables, as well as external environment. Within this paradigm variables are considered as containers for data similar to memory cells of computer memory. In the imperative paradigms we can think of a program as an active agent that manipulates passive objects. We encounter many passive objects in our daily life: a stone, a book, a lamp, and so on. A passive object cannot initiate an action by itself, but it can receive actions from active agents. A program in a procedural paradigm is an active agent that uses passive objects that we refer to as data or data items. To manipulate a piece of data, the active agent issues an action, referred to as a procedure. For example, think of a program that prints the contents of a file. The file is a passive object. To print the file, the program uses a procedure, which we call print. The concept of the imperative paradigm Imperative Paradigms is made up of three parts: a part for object creation, a set of procedure calls and a set of code for each procedure. Some procedures have already been defined in the language itself. By combining this code, the programmer can create new procedures. Characteristics: Discipline and idea Digital hardware technology and ideas of Von Neumann Incremental change of the program it state as a function of time. Execution of computational steps in an order governed by control structures We call the steps for command Straightforward abstractions of the way a traditional Von Neumann computer works Similar to descriptions of everyday routines, such as food recipes and car repairs Typical commands offered by imperative languages Assignment, IO, procedure calls The natural abstraction is the procedure Abstracts one or more actions to a procedure, which can be called as a single command. Procedural programming OBJECT-ORIENTED PARADIGM: Object-Oriented Paradigm, a program describes the structure and behaviour of so called objects and classes of objects. An object encapsulates passive data and active operations on these data: it has a storage fixing its state and a set of methods describing behaviour of the object. Classes compose an inheritance hierarchy including polymorphism of operation. Execution of an object-oriented program is regarded as exchange of message between objects, modifying states. Object-oriented paradigm deals with active objects instead of passive objects. We encounter many active objects in our daily life. The actions to be performed on these objects are included in the object: the objects need only to receive the appropriate stimulus from outside to perform one of the actions. A file in an object-oriented paradigm can be packed with all the procedures called methods in the object-oriented paradigm to be performed by the file: printing, copying, deleting and so on. The program in this paradigm just sends the corresponding request to the object. In object-oriented paradigm, objects of the same type (files, for example) need a set of methods that show how an object of this type reacts to stimuli from outside the objects territories. To create these methods, a unit called a class is used Characteristics: Discipline and idea The theory of concepts, and models of human interaction with real world phenomena Data as well as operations are encapsulated in objects Information hiding is used to protect internal properties of an object Objects interact by means of message passing A metaphor for applying an operation on an object In most object-oriented languages objects are grouped in classes Objects in classes are similar enough to allow programming of the classes, as opposed to programming of the individual objects Classes represent concepts whereas objects represents phenomena Classes are organized in inheritance hierarchies Provides for class extension or specialization Real-World Example using Imperative and Object-oriented Paradigms: Lets say that you are working for a vehicle parts manufacturer that needs to update its online inventory system. Your boss tells you to program two similar but separate forms for a website, one form that processes information about cars and one that does the same for trucks. For cars, we will need to record the following information: Colour, engine size, transmission type, number of doors For bus, the information will be similar, but slightly different, we need: Colour, engine size, transmission type, number of passengers In Imperative programming, you would write the code first to process the car form and then the code for the truck form, but In Object-Oriented programming, you would write a base class called vehicle that would record the common characteristics what we need from both trucks and cars. In this case, the vehicle class will record: Colour, engine size, transmission type Well make each one of those characteristics into a separate method. The colour method, for example, could take the colour of the vehicle as a parameter and do something with it, like storing it in a database. Next, we will create two more classes: truck and car, both of which will inherit all of the methods of the vehicle class and extend it with methods that are unique to them. The car class will have a method called numberofdoors and the truck class will have the methods numberofpassengers. As you seen from above example , employing an object-oriented programming style has significant advantages over Imperative programming, especially as your scale increases, doesnt mean that you should never use Imperative programming, if youre doing a mock-up or a proof-of-concept app, you might not have time to make everything object-oriented and so I think it might would be better to use Imperative programming for a prototypes, but it would be best to make the production product in an Object-Oriented manner. Conclusion: Object-Oriented programming is the brain-child of imperative programming and would not exist without its parent. On that note, we would not have the large-scale, highly modular, highly powerful programming abilities that we have today without the growth of imperative procedural programming into what is now object-oriented programming.

Farming land Essay

In the late 1800s, many farmers were trapped in a vicious economic cycle. Crops prices began falling and farmers were often forced into mortgaging their farms so they could buy more land and produce more crops to break even. Good farming land was becoming rare and the banks took over the mortgages of farmers who couldn’t make payments on their loans. The railroads, on the other end, took advantage of farmers by charging them extreme prices for shipping and storage. Both equally frustrating the farmer, who pretty much resembled a larger economic problem because if he wasn’t doing well then the whole nation can’t do well either. Banks controlled the farmer, they watched the farmer’s and had input on everything they did. The Banks relentlessly took over the mortgages of farmers who couldn’t make payments on their loans (doc d). Generally, the average farmer struggled during the late 1800’s due to the huge increase of agriculture worldwide. Because of many technological improvements, which boosted competition, now farmers faced foreign competition, and are now forced to adjust the prices of their crops to stay competitive. An increase of production repaid the farmer’s losses only temporarily. However, farmers soon realized the limitations of farming land. Also they realized that their own surplus of crops just lower the cost so in the end they don’t make as big of a profit. (doc e). The troubles of a farmer were part of a larger economic problem that was affecting the entire nation. Deflation followed the Civil War, which made the amount of money in circulation decreased therefore the value increased. This was bad for the farmer because products took up a lower value. Loans that needed to be repaid with dollars are now worth more than what the farmers had originally borrowed, so many farmers lost money. The farmers saw a solution. It was the use of â€Å"cheap money† to reverse the effects of deflation. Farmers demanded the increase of greenbacks with the addition of unlimited coinage of silver (doc b). With the passage of the Bland-Allison Act in 1878, around 2 to 4 million was added to the silver supply. Yet that only eased it, and didn’t solve the main problem (doc). To make things even worse, railroad companies added more load on the  farmer’s by taking advantage with prices to transport grain. A lack of competition among the railroads enabled them to put high costs, sometimes making a shipment of grain nearly unprofitable (doc h). Also, railroads gained control over grain storage prices, enabling their influence over the market of price of crops. Justifying the transport prices became unchallengeable due to the lack of competition (doc g). There’s not much farmers can do than hope for some reforms since they’re stuck in a cycle of credit that meant longer hours and more debt with every year. Good farming land quickly became rare and the banks took over the mortgages of farmers who couldn’t keep up with payments on their loans. The railroads took advantage of farmers by charging them excessive prices for shipping and storage. As a solution the Bland-Allison Act in 1878 was pasted. The issue of the farmer’s debt stuck around. There validity of the farmer complaints is totally acceptable due to all the struggles and hardships they went through.

Meg Whitman and Her Leadership Style - 3670 Words

Meg Whitman and her Leadership style Meg Whitman was born in 1957 and she grew up in Cold Spring Harbor, Long Island, New York. When Whitman entered Princeton University, she planned a career in medicine, but she became an economics major after a summer job selling advertising for a campus publication. She graduated with an economics degree in 1977 and earned an MBA from Harvard Business School two years later. Whitman joined Procter Gamble, later worked for the consulting firms of: Bain Co., Walt Disney, Stride Rite Shoes, Florists Tran world Delivery (FTD), and Hasbro. At Hasbro, she was responsible for marketing Playskool and Mr. Potato Head brands. Whitman, now 49, joined eBay in1998 as president and CEO, has helped turn it†¦show more content†¦http://www.businessweek.com/technology/content/jun2007/tc20070615_661449.htm?chan=search Connects with People Whitman acts like an average person would. Shes not on a different level the way some executives are. She keeps a steady hand on the tiller rather than gripping and pulling hard on the levers of power. She delicately steers and builds relationships with her employees instead of controlling them. She works from a cube, like all her other employees and not from a corner office. Instead of commanding her employees, she prefers to converse with them. She asks questions, instead of providing answers and then sharing whats been learned. She encouraged participation and is willing to share ideas and information. It builds continual consensus and earns trust through simplicity for Meg and her employees. She says that at eBay, its a collaborative network. It is truly in a partnership with the community of users. For her the key is connecting employees and customers in two-way communication, The Power of All of Us. Whenever shes out traveling, shes talking to people who use eBay. 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Read the case carefully and answer the following questions: 1.Till 2005, eBay EachNet was the leader in the Chinese e-commerce market, controlling more than half of it. But eBay EachNet soon lost its market leadership position to Taobao.com (Taobao). In this context, analyze the reasons that can be attributed to Taobao’s edge over eBay. 2.a. To enable people to trade with each other, Pierre Omidyar created a marketplace in September 1995 which was later called

Due To The Relative Lack Of Research On Latino/A In The

Due to the relative lack of research on Latino/a in the United States, we often take in information of them that is portrayed through the media, which provides negative perspectives that can easily screw a person s view of Latina/os, especially those who are non Latina/os. Latinos are usually perceived as the drug dealer, illegal immigrant criminal, gang member, etc. Although not every Latino/a is any of the above, and like many other individuals of other races, there are some who do participate in illegal activity. Instead of trying to understand why these things occur, we often label them and tend to ignore/stay away from the issue, neglecting the problem. Therefore, one must understand why some Latino/a decide to join gangs, knowing it†¦show more content†¦In addition, their low economic status can also push many to join gangs since gangs sometimes provide economic and social advantages through illegal activities (i.e. selling drugs). In replacement of the parents absente es, often the oldest siblings are forced to take on the parent s role. However, some older siblings may not be good role models, and some may even be in gangs themselves, influencing the younger siblings to join even if the oldest tries to refrain them to. An example is provided in the article â€Å"Where the Streets Cross the Classroom: A Study of Latino Students’ Perspectives on Cultural Identity in City Schools and Neighborhood Gangs† by Susan Roberta Katz where she speaks about a young middle school student by the name of Julio Cortez whose older brother was the leader of a gang named Norteno. Although his brother was in and out of Juvenile detention and later charged with attempted murder, and also tried to restrain Julio from participating from any gang affiliated activity, Julio saw his brother as a â€Å"war hero† and later joined a gang (Katz, 1996). 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Since the research materials are provided to you by human beings, and may be based on numerous sources, it is strongly recommended that you conduct independent research to verify that all information is complete and accurate before referencing the material. This reminder does not contain all of the terms and conditions that govern your purchase Cultural norms: Mexican-American culture Customary practices within the culture Read MoreThe Goal Of Healing Homes1621 Words   |  7 Pageshas the ability to reach full potential, Healing Homes focuses on a curriculum that teaches parents and caregivers how to be better listeners and supportive parents and enables children to improve. According to Dettlaf Rycraft (2010), â€Å"immigrant Latino children and families represent the largest and fastest-growing population in the United States, and thus require the attention of child welfare systems and the development of evidence-based practices designed to respond to the unique needs of this