57 lines
1.3 KiB
Scheme
57 lines
1.3 KiB
Scheme
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(define collect void)
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(define test
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(lambda (name x1 x2)
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(unless (equal? x1 x2)
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(error 'test "test ~s failed: expected ~s, got ~s" name x1 x2))
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(printf "~a ok\n" name)))
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(test 1
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'(12 17 yes)
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(let ([h (make-hash-table)])
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(put-hash-table! h 'foo 12)
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(put-hash-table! h 'bar 17)
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(collect)
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(list
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(get-hash-table h 'foo 'no)
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(get-hash-table h 'bar 'no)
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(get-hash-table h 'baz 'yes))))
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(define iota
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(lambda (i n)
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(cond
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[(fx= i n) '()]
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[else (cons i (iota (fx+ 1 i) n))])))
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(test 2
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(iota 1 10001)
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(let ([h (make-hash-table)])
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(for-each
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(lambda (i) (put-hash-table! h i (fx+ 1 i)))
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(iota 0 10000))
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(collect)
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(map
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(lambda (i) (get-hash-table h i #f))
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(iota 0 10000))))
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(test 3
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(iota 2 10002)
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(let ([h (make-hash-table)])
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(for-each
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(lambda (i) (put-hash-table! h i (fx+ 1 i)))
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(iota 0 10000))
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(for-each
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(lambda (i) (put-hash-table! h i
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(fx+ 1
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(get-hash-table h i -1000))))
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(iota 0 10000))
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(collect)
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(map
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(lambda (i) (get-hash-table h i #f))
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(iota 0 10000))))
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