RosettaCodeData/Task/Empty-string/Scheme/empty-string.ss at master - aparler/RosettaCodeData - Forgejo: Beyond coding. We Forge.

aparler/RosettaCodeData

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2013-04-10 16:57:12 -07:00

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 (define empty-string "")
 (define (string-null? s) (string=? "" s))
 (define (string-not-null? s) (string<? "" s))