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Add (very simple) type for hash.

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original commit: c88e536c460ff05fc1e8b4c134a5361a14a3f32f
This commit is contained in:
Sam Tobin-Hochstadt 2013-10-03 13:13:46 -04:00
parent d49488ebaf
commit 3405bbdfac
1 changed files with 2 additions and 0 deletions
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pkgs/typed-racket-pkgs/typed-racket-lib/typed-racket/base-env/base-env.rkt
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@ -923,6 +923,8 @@
[hash-eqv? (-> -HashTop B)]
[hash-equal? (-> -HashTop B)]
[hash-weak? (-> -HashTop B)]
;; not a very useful type, but better than nothing
[hash (-poly (a b) (-> (-HT a b)))]
[make-hash (-poly (a b) (->opt [(-lst (-pair a b))] (-HT a b)))]
[make-hasheq (-poly (a b) (->opt [(-lst (-pair a b))] (-HT a b)))]
[make-hasheqv (-poly (a b) (->opt [(-lst (-pair a b))] (-HT a b)))]