Lisp is a family of computer programming languages with a long history and a distinctive fully-parenthesized syntax. Originally specified in 1958, Lisp is the second-oldest high-level programming language in widespread use today; only Fortran is older. Like Fortran, Lisp has changed a great deal since its early days, and a number of dialects have existed over its history. Today, the most widely-known general-purpose Lisp dialects are Common Lisp and Scheme.

Lisp was originally created as a practical mathematical notation for computer programs, based on Alonzo Church's lambda calculus. It quickly became the favored programming language for artificial intelligence research. As one of the earliest programming languages, Lisp pioneered many ideas in computer science, including tree data structures, automatic storage management, dynamic typing, object-oriented programming, and the self-hosting compiler.

The name Lisp derives from "List Processing". Linked lists are one of Lisp languages' major data structures, and Lisp source code is itself made up of lists. As a result, Lisp programs can manipulate source code as a data structure, giving rise to the macro systems that allow programmers to create new syntax or even new "little languages" embedded in Lisp.

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Joke of the Day

Just A Juggalo
A man is driving home, when is pulled over by a patrolman for a broken blinker. The cop looks into the guys' car and sees a collection of knives in the backseat. "Sir," the cop says. "Why do you have all those knives?" "They're for my juggling act," the man says. "I don't believe you," says the cop. "Prove it." So the man gets out of his car and begins juggling the knives. At the same time, a car with two guys in it drives by. "Man," says the first guy. "I'm glad I quit drinking. These new sobriety tests are hard."
Working On The Fourth Husband
A woman announces to her friend that she is getting married for the fourth time. "How wonderful! But I hope you don't mind me asking what happened to your first husband?" "He ate poisonous mushrooms and died." "Oh, how tragic! What about your second husband?" "He ate poisonous mushrooms too and died." "Oh, how terrible! I'm almost afraid to ask you about your third husband." "He died of a broken neck." "A broken neck?" "He wouldn't eat the mushrooms."
Who Let The Blondes Out?
How many blondes does it take to milk a cow? Five - one to hold the udder, and four to lift and the cow up and down.
Railroad Redneck
Three railroad workers, a Chinese man, an Italian, and a redneck, are all sitting down to lunch. The Chinese man says, "If I get another egg roll in my lunch, I'll kill myself." The Italian guy says, "If I get another slice of pizza, I'll kill myself." The redneck says, "Iffin I get another ham hock, I'll kill myself." The next day, all three men get the same lunches, so they throw themselves in front of an oncoming train. At the funeral the Chinese man's wife says, "If only I hadn't packed an egg roll that day." The Italian guy's wife says, "If only I hadn't packed a slice of pizza that day." "Don't look at me," says the redneck's wife. "He done packed his own vittles."
Incontinent Vegetarian
What do you call a vegetarian with diarrhea? A salad shooter.
First Class Blondie
A beautiful young blond woman boards a plane to LA with a ticket for the coach section. She looks at the seats in coach and then looks ahead to the first class seats. Seeing that the first class seats appear to be much larger and more comfortable, she moves forward to the last empty one. The flight attendant checks her ticket and tells the woman that her seat is in coach. The blond replies, "I'm young, blond and beautiful, and I'm going to sit here all the way to LA." Flustered, the flight attendant goes to the cockpit and informs the captain of the blond problem. The captain goes back and tells the woman that her assigned seat is in coach. Again, the blond replies, "I'm young, blond and beautiful, and I'm going to sit here all the way to LA." The captain doesn't want to cause a commotion, and so returns to the cockpit to discuss the blond with the co-pilot. The co-pilot says that he has a blond girlfriend, and that he can take care of the problem. He then goes back and briefly whispers something into the blonde's ear. She immediately gets up, says, "Thank you so much," hugs the co-pilot, and rushes back to her seat in the coach section. The pilot and flight attendant, who were watching with rapt attention, together ask the co-pilot what he had said to the woman. He replies, "I just told her that the first class section isn't going to LA."

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