12 lines
350 B
Racket
12 lines
350 B
Racket
;there is no built-in way to set! append in racket
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(define mystr "foo")
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(set! mystr (string-append mystr " bar"))
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(displayln mystr)
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;but you can create a quick macro to solve that problem
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(define-syntax-rule (set-append! str value)
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(set! str (string-append str value)))
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(define mymacrostr "foo")
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(set-append! mymacrostr " bar")
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(displayln mystr)
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