#lang typed/racket
(require [rename-in typed/rackunit [check-equal? test]])
(define (safe-div2 [num : Number] [den : Number])
(if (zero? den)
#f
(/ num den)))
(test (safe-div2 42 0) #f)
(test (safe-div2 42 12) 7/2)
#lang typed/racket
(require [rename-in typed/rackunit [check-equal? test]])
(define (safe-div2 [num : Number] [den : Number])
(if (zero? den)
#f
(/ num den)))
(test (safe-div2 42 0) #f)
(test (safe-div2 42 12) 7/2)