►How to Design Programs Languages
▼3 Intermediate Student
On this page:
cond
else
if
and
or
check-expect
check-within
check-error
check-member-of
check-range
empty
true
false
require
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3.9 Unchanged Forms

(cond [expr expr] ... [expr expr])
else
The same as Beginning’s cond.

(if expr expr expr)
The same as Beginning’s if.

(and expr expr expr ...)
(or expr expr expr ...)
The same as Beginning’s and and or.

(check-expect expr expr)
(check-within expr expr expr)
(check-error expr expr)
(check-error expr)
(check-member-of expr expr expr ...)
(check-range expr expr expr)
The same as Beginning’s check-expect, etc.

empty : empty?
true : boolean?
false : boolean?
Constants for the empty list, true, and false.

(require module-path)
The same as Beginning’s require.

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