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common-lisp
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anonymous
2020.06.26 09:39:47
ONE-MORE-RE-NIGHTMARE> (join (start-group 0) (join (start-group 1) (join (text "xy") (join (end-group 1) (end-group 0))))) (JOIN (START-GROUP 0) (JOIN (START-GROUP 1) (JOIN (JOIN (LITERAL { x }) (LITERAL { y })) (JOIN (END-GROUP 1) (END-GROUP 0))))) ONE-MORE-RE-NIGHTMARE> (derivative * (symbol-set #\x)) (JOIN (LITERAL { y }) (JOIN (END-GROUP 1) (END-GROUP 0))) (1 0) NIL ONE-MORE-RE-NIGHTMARE> (derivative * (symbol-set #\y)) (JOIN (END-GROUP 1) (END-GROUP 0)) NIL (0 1)
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