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Changed dderiv to be closer to the untyped version.

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This commit is contained in:
Vincent St-Amour 2010-06-23 14:50:33 -04:00
parent b345d5f0f0
commit a14c31a1de
1 changed files with 2 additions and 3 deletions
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5
collects/tests/racket/benchmarks/common/typed/dderiv.rktl
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@ -42,10 +42,9 @@
(: put (Symbol Symbol ((Listof Deriv) -> Deriv) -> Void))
(define (put sym d what)
(set! pg-alist (cons (cons sym what) pg-alist)))
(: get (Symbol Symbol -> (U ((Listof Deriv) -> Deriv) #f)))
(: get (Symbol Symbol -> ((Listof Deriv) -> Deriv)))
(define (get sym d)
(cond ((assq sym pg-alist) => cdr)
(else #f)))
(cdr (assert (assq sym pg-alist))))
(define-type Deriv (Rec Deriv (U Number
Symbol