2014年11月9日星期日

Nov 3 week 9

In the first term test, there is a kind of built-in values:
Number-Boolean 
Image-image

Now I know that called The DATA-TYPES

  • Number
  • Image
  • Boolean
  • String
  • List
  • Color
I guess it Will appear in the second term test too!!!


Here is an example,

There are two people 

Lucy LuLu 1990
George Brown 1991

(define Lucy ( list "Lucy LuLu" 1990))
(define George (list "George Brown" 1991))

(Define person-name first)
(define person-birth-year second)

Lucy
"Lucy LuLu" 1990





Define-strict
I find a picture that about check-expect


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