grammer error
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@ -20,7 +20,7 @@
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expr)))))
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expr)))))
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(define (memoize f)
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(define (memoize f)
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"memoize on a symbol"
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"memoize on symbols"
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(define cache (make-dictionary))
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(define cache (make-dictionary))
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(lambda (sym)
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(lambda (sym)
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(if (dictionary-has? cache sym)
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(if (dictionary-has? cache sym)
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