racket intro
types, function-application, syntax, function-composition, signatures

When watching the videos below, you should be typing similar expressions in DrRacket yourself (download), and pausing to think about & answer questions as indicated.

The "demo'd" code file: before and after after. (Provided just for convenience.)

Types video (9m22s)
Calling a function video (6m59s)
Syntax of function-call video (6m18s)
Nested function calls ("composing functions") video (11m21s)
signatures (to be covered in class)
defineing constants, and functions

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racket intro types, function-application, syntax, function-composition, signatures

racket intro
types, function-application, syntax, function-composition, signatures