4.13. SUMMARY OF SCHEME SYNTAX

63

Logical operators:

(and T1 T2 ...)

(or T1 T2 ...)

(not T)

Arithmetic operators:

(+ a b ...) (  a b) (* a b ...) (/ a b)

(sqrt a) (exp a) (log a) (sin a) (cos a) (tan a)

(asin a) (acos a) (atan a) (round a)

Comparison operators:

(< a b) (> a b) (<  a b) (>  a b) (= a b) (!= a b)

(equal? a b)

Java procedures:

(Date.)

(Math.random)

(.getHeader request "....")

(.getRemoteAddr request)

(.sendRedirect response URL)

Figure 4.2: Scheme procedures seen so far