On Jun 29, 2012, at 5:52 PM, Stephen Bloch wrote:
> Another thing I recommend: every time you write a define-struct, write down
> (in comments) the contracts for all the functions it gives you for free.
>
> For example,
> ; a person has a forename and a family-name (both strings), and a birth-year
> (a number).
> (define-struct person forename family-name birth-year)
> ; make-person : string string number -> person
> ; person-forename : person -> string
> ; person-family-name : person -> string
> ; person-birth-year : person -> number
> ; person? : anything -> boolean
He tried so let me propose a slightly different format:
make-person ; string string number -> person
person-forename ; person -> string
^
|
+------ please do notice the semicolon here; the rest of these
lines are comments
This will ensure he gets the names right.
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