ITEC 380 2012fall ibarland tlewis32

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lect01c
Racket intro continued: functions

  Review: uses prefix notation,
   exact rationals [compare scheme vs Java vs ...]
Let's write some functions:


Last time we saw:

I. define
(define a 2)
(define b 8)
(define c 42)
; quadratic expression



Let's turn our answer into a function (w/ some test cases):

II. define a function
(define (root1 a b c)
  ...)



  
; Define:
;    statically typed
;    type safety
;    untyped
; Java/Racket vs C vs assembly (and nearly php)
; "Strongly typed" sometimes means either

III. practice: string functions
blend : string, string -> string

IIIa: expected results
IIIb: write
IIIc: expected results w/ 'string=?'; expected results w/ check-expect

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©2012, Ian Barland, Radford University Last modified 2012.Sep.10 (Mon)

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