How to Use the Perl Array Grep() Function

The Perl  grep() function is a filter that runs a regular expression on each element of an array and returns only the elements that evaluate as  true. Using regular expressions can be extremely powerful and complex. The grep() functions uses the syntax List grep(Expression, array). Using Grep() Function to Return True Expressions myNames (Jacob, Michael, Joshua, Mathew, Alexander, Andrew); grepNames grep(/^A/, myNames); Think of the myNames array as a row of numbered boxes, going from left to right and numbered starting with a zero. The grep() function goes through each of the elements (boxes) in the array and compares their contents to the regular expression. If the result is true, the contents are then added to the new grepNames array. In the above example, the regular expression /^A/ is looking for any value that starts with a capital A. After sifting through the contents of the myNames array, the value of grepNames becomes (Alexander, Andrew), the only two elements that start with a capital A. Reversing the Expression in a Grep() Function One quick way to make this particular function more powerful is to reverse the regular expression with the NOT operator. The regular expression then looks for elements that evaluate to false and moves them into the new array. myNames (Jacob, Michael, Joshua, Mathew, Alexander, Andrew); grepNames grep(!/^A/, myNames); In the above example, the regular expression is looking for any value that does not start with a capital A. After sifting through the contents of the myNames array, the value of grepNames becomes (Jacob, Michael, Joshua, Matthew). About Perl Perl is an adaptable programming language frequently used to develop web applications.  Perl  is an  interpreted, not compiled, language, so its programs take up more CPU time than a compiled language—a problem that becomes less important as the speed of processors increases. However, writing in Perl is faster than writing in a compiled language, so the time you save is yours.

The Rebellion Of The Vesey Uprising Of Charleston, South...

Just ten years later another significant uprising occurred named the Vesey Uprising in Charleston, South Carolina. A slave named Devany Prioleau told his master that he heard a rumor of an uprising from another slave who was named William Paul. Slaves were taken into questioning but had denied the uprisings. One slave said it was to happen on the sixteenth but it never happened. Still ten slaves were arrested including Prioleau and Paul. A secret testimony was taken to account saying that the slaves arrested and one free slave named Denmark Vesey were all in on an uprising. Vesey and five other slaves were hung for their crime all while protesting their innocence. â€Å"†¦they, in there agony of strangulation, begged earnestly to be dispatched; which was done with pistol-shot by the Captain of the City Guard, who was always prepared for such an emergency; i.e. shooting slaves†. A colored American who was a witness to these events shared their opinion on the matter. From t he pamphlet, this person was outraged by the indiscrimination that went on in the Vesey Uprising with the murders of 35 slaves. The only uprising with the greatest number of whites killed was the Nat Turner’s Rebellion. Nat Turner was a religious and educated man who was convinced by Christ that his mission was to lead a rebellion. Turner decided to gather others for the rebellion and then killed his owner and family. He and his men marched from plantation to plantation gathering other slaves and slaughteringShow MoreRelatedEssay on Major Slave Rebellions of the South1314 Words   |  6 PagesMajor Slave Rebellions of the South Slavery in North America began with the Portuguese in the seventeenth century. Increasing and spreading significantly, slavery eventually became an economic staple in the southern region of America. Although widespread and popular, rebellion against this human bondage was inevitable. 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What Makes Us Human free essay sample

Anthropologists say that we are humans because of evolution. The portion of DNA that is responsible for the structure of proteins is 99. 4% common in humans and chimpanzees. Anthropologists say that we are humans because of evolution. The portion of DNA that is responsible for the structure of proteins is 99. 4% common in humans and chimpanzees. The dictionary says that human beings are individuals of the genus Homo, or more specifically, Homo sapiens. That only answers the anthropological aspect of what makes us human. Paul Bae also takes the anthropological stance on humankind saying that â€Å"Changes caused by evolution and time make us human. † When asked what separates humans from animals, he replied saying â€Å"human minds are more developed than animals, allowing humans to be at the top of the food chain. † Psychologists say a distinctive quality in humans is the cognitive process. The cognitive process is a demonstration of the central ability humans possess that define us. We will write a custom essay sample on What Makes Us Human or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page More simply, it is our ability to think and make decisions. The brain plays the most crucial part in the cognitive process. The part of the brain that differentiates the human brain from brains of other species’ is the cerebral cortex. The cerebral cortex controls senses, thoughts, language and memory. The brain plays the most crucial part in the cognitive process. The part of the brain that differentiates the human brain from brains of other species’ is the cerebral cortex. The cerebral cortex controls senses, thoughts, language and memory. Aaron Marentette agrees with psychologists and says â€Å"The thing that makes us humans is our ability to make smart choices and just choices in general. When he was asked the question of what difference there is between humans and animals, he responded, saying â€Å"The difference is that we have undergone evolution and therefore, have become more civil. † Finally, sociologists say that the factor that makes humans human is culture. Culture is simply the ideas, abilities, and behaviours people have acquired to become members of society. Culture is always evolving in society and the world and it mainly unique to the human species. Above: Culture plays a huge part in shaping humans. Culture affects how we treat each other and interact. Above: Culture plays a huge part in shaping humans. Culture affects how we treat each other and interact. Below: Culture is specific to humans. Animals indicate SOME aspects of culture but it is ingrained by genetic programming. Humans can change their environment and pass the changes onto their children. Below: Culture is specific to humans. Animals indicate SOME aspects of culture but it is ingrained by genetic programming. Humans can change their environment and pass the changes onto their children. Max Nascimento believes that we are human because â€Å"humans have free will and have the ability to conquer anything we envision. † His thoughts on the variation between humans and animals are that â€Å"animals walk on four legs, act on instinct, and don’t have a conscience. † All three answers to what makes us human are correct. Evolution made us human through changes in DNA. The cognitive process made us human through our ability to problem solve and think. And finally culture shaped us into the social beings we are. They are all factors that affect humans and differentiate us from any other living species on this planet.

Puritan Dbq free essay sample

He believed in simple life where he denied himself the privilege to spend his money or time on leisurely things. He spent any free time he had on studying his religion. John Higginson says that â€Å"New England is†¦ a plantation of Religion, not a Plantation of Trade. † John again reinforces the fact that Puritan values strongly despised of a system of trade where they gained worldly items. John also says â€Å"remember†¦ that worldly gain was not the end and designe†¦, but Religion. † A primary example of this is the City on the Hill. The city of Boston was supposed to be a beacon to the rest of the world of a pure Christian society where everyone believed that the afterlife was more important, and only did enough in their life economically to survive. Puritans values in subsidence living as required by their religion shaped New England. The Puritans influenced the political system in New England in a way that is very similar to how the political system works today. We will write a custom essay sample on Puritan Dbq or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Values held by the Puritans required them to attend church every Sunday. Because church was always attended by every member of the community on Sundays decisions about the whole of community could easily be made between the head of each household. They believed that each person should have no power greater than that which they will use. (Doc H) This insured that the leaders of the communities were not able to abuse their power. The power given to those leaders is not more than the power of those who give it. (Doc H) The people are more in control of their government. Court assemblies in the colony of Massachusetts insured that each community was brought together in order to make laws for the whole of the colony. The lasting effect of how Puritan values shaped development in New England from 1630 to the 1660s is not their values but the values which arose in opposition to Puritan values. Therefore you can say these other beliefs are directly the result of Puritan values. Roger Williams was a separatist that said â€Å"God requireth not a uniformity of religion to be enacted and enforced in any civil state†¦Ã¢â‚¬  This was the first notion in American history of the separation of church and state and heavily influenced development in New England. This led the way to founding of the city of Providence in which everyman held equal rights and voted on every change in their civil lives. Roger William gave rose to other proponents of his ideas of separation of church and state. Nathaniel Ward said that if the church is to promote toleration of any religion then they must give liberty in matters of religion in their moral laws. He says that to not do so is a fiddle that â€Å"will be out of tune, and some of the strings crack. † Puritan values and the results of Puritan values heavily influence the political development of New England. Throughout the 1630s to 1660s political developments in New England took a route that through Puritan values many of the same beliefs held on government are seen today. Puritan values created the separation of church and state, equal rights of men, and representation of the people in government. Social development in New England through 1630 to the 1660s was dependent on the Puritan religious beliefs. The church was the center of all social development in New England. This evident while looking at a map of a community in New England during 1630 to 1660s. The center of town is dominated by a church, village green, and town hall. (Doc B) These all tie together because John Wintrop the founder of a Puritan community said that everyone should work together for the good of each other because God commands it. This evident influence of church and religious values held by Puritans influence New Englands development because the social lifestyle was led by the church and the social development determines the economic and political development.