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Provide built-in `computer' record type for DMdA.

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`chocolate-cookie' has been wildly unpopular, so we'll try this next semester.

Also, clean up the `provide' forms for the chocolate cookies.
This commit is contained in:
Mike Sperber 2010-09-09 11:56:42 +02:00
parent 8611cd8731
commit 3f8b2e6ea2
5 changed files with 26 additions and 9 deletions
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3
collects/deinprogramm/DMdA-advanced.rkt
View File

@ -12,8 +12,7 @@
check-expect check-within check-error check-member-of check-range
check-property for-all ==> expect expect-within expect-member-of expect-range
signature contract : define-contract -> mixed one-of predicate combined list-of
number real rational integer natural boolean true false string symbol empty-list unspecific property
chocolate-cookie)
number real rational integer natural boolean true false string symbol empty-list unspecific property)
(provide cons)
(provide-and-document
procedures

3
collects/deinprogramm/DMdA-assignments.rkt
View File

@ -12,8 +12,7 @@
check-expect check-within check-error check-member-of check-range
check-property for-all ==> expect expect-within expect-member-of expect-range
signature contract : define-contract -> mixed one-of predicate combined list-of
number real rational integer natural boolean true false string empty-list unspecific property
chocolate-cookie)
number real rational integer natural boolean true false string empty-list unspecific property)
(provide cons)
(provide-and-document
procedures

3
collects/deinprogramm/DMdA-beginner.rkt
View File

@ -8,8 +8,7 @@
check-expect check-within check-error check-member-of check-range
check-property for-all ==> expect expect-within expect-member-of expect-range
signature contract : define-contract -> mixed one-of predicate combined
number real rational integer natural boolean true false string empty-list property
chocolate-cookie)
number real rational integer natural boolean true false string empty-list property)
(provide cons list)
(provide-and-document
procedures

3
collects/deinprogramm/DMdA-vanilla.rkt
View File

@ -8,8 +8,7 @@
check-expect check-within check-error check-member-of check-range
check-property for-all ==> expect expect-within expect-member-of expect-range
signature contract : define-contract -> mixed one-of predicate combined list-of
number real rational integer natural boolean true false string empty-list property
chocolate-cookie)
number real rational integer natural boolean true false string empty-list property)
(provide cons)
(provide-and-document
procedures

23
collects/deinprogramm/DMdA.rkt
View File

@ -37,7 +37,6 @@
boolean true false
string symbol
empty-list
chocolate-cookie
unspecific
property)
@ -274,7 +273,23 @@
(reverse ((list %a) -> (list %a))
"Liste in umgekehrte Reihenfolge bringen"))
("Computer"
(computer signature
"Signatur für Computer")
(make-computer (string rational rational -> computer)
"Computer aus Prozessorname, Arbeitsspeicher und Festplattenkapazität konstruieren")
(computer? (%a -> boolean)
"feststellen, ob Wert ein Computer ist")
(computer-processor (computer -> string)
"Prozessorname aus Computer extrahieren")
(computer-ram (computer -> rational)
"Arbeitsspeicher aus Computer extrahieren")
(computer-hard-drive (computer -> rational)
"Festplattenkapazität aus Computer extrahieren"))
("Schokokekse"
(chocolate-cookie signature
"Signatur für Schokokekse")
(make-chocolate-cookie (number number -> chocolate-cookie)
"Schokokeks aus Schoko- und Keks-Anteil konstruieren")
(chocolate-cookie? (%a -> boolean)
@ -850,6 +865,12 @@
make-chocolate-cookie chocolate-cookie?
(chocolate-cookie-chocolate chocolate-cookie-cookie))
(define-record-procedures computer
make-computer computer?
(computer-processor
computer-ram
computer-hard-drive))
(define (violation text)
(error text))