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Lecture #1 Notes Opening lecture notes

Computer Science
Course Code
Craig Kaplan

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Sept 14, 2010
Course webpage
Craig S. Kaplan
ISG Coordinator: Karen Anderson - Person you give doctor’s notes, exct.
CS undergrad advisors
Handouts available online and printed from campus copy
Software: DrRacket v5.0.1 (
Cs survival guide available online
read it asap
read the section on plagiarism
do your own work, and completing assignments is the key to success
Programming language design
Imperative: based on frequent changes to data
Eg. Machine language, Java, C++, Turing, VB
Functional: based on the computation of new values rather than the transformation of old ones
Eg. Excel formulas, LISP, ML, Haskell, Erlang, F#, Mathematic, XSLT
More closely connected to mathematics
Easier to design and reason about programs
A functional programming language
Minimal but powerful syntax
Small toolbox with the ability to construct additional required tools
Interactive evaluator
Used in education and research since 1975
Racket: a dialect of Scheme
Functions in mathematics
A function is an abstraction that captures a repeated computation
f(x) = x^2
g(x,y) = x + y
=>Function name, arguments, computation
g(f(3),(g(4,2)) = 15
1. g(3^2,g(4,2))
2. g(9,g(4,2))
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