Empty string: Difference between revisions

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=={{header|Scheme}}==
<lang scheme>(define empty-string "")▼
The Scheme highlighter has it wrong. It highlights variables like numbers or only half... Don't rely on it!
<lang scheme>
▲(define empty-string "")
(define (string-null? s) (string=? "" s))
(define (string-not-null? s) (string<? "" s))</lang>
Retrieved from "https://rosettacode.org/wiki/Empty_string"