ITEC 380 2009spring ibarland

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lect04
cf Java

Review list functions:
  count-evens
  count-good-items
  filter

; filter-less-than : real (list-of real) -> (list-of real)
(define (filter-less-than threshold data)
   ...)
   ; How to write this, by calling filter ?


  lambda
  Higher-order functions!

Typed scheme:
module with contracts,
and
using that module.





language shorthand:
  let*
  #;
  list vs cons;    '  `  ,  ,@


Compare the same code in Java vs Scheme
  The methods first, rest.


Java's loops;  the sublist method.


UtilIan.java/

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©2009, Ian Barland, Radford University Last modified 2009.Feb.16 (Mon)

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