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11
Task/Deepcopy/PicoLisp/deepcopy-4.l
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11
Task/Deepcopy/PicoLisp/deepcopy-4.l
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(de deepCopy (X)
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(let Mark NIL
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(recur (X)
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(cond
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((atom X) X)
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((asoq X Mark) (cdr @))
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(T
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(prog1 (cons)
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(push 'Mark (cons X @))
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(set @ (recurse (car X)))
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(con @ (recurse (cdr X))) ) ) ) ) ) )
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