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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Remove-lines-from-a-file/Racket/remove-lines-from-a-file.rkt Normal file
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#lang racket
(define (remove-lines file from num)
(define lines (file->lines file))
(define-values [pfx rest] (split-at lines (sub1 from)))
(display-lines-to-file (append pfx (drop rest num)) file #:exists 'replace))