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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/String-prepend/Common-Lisp/string-prepend.lisp Normal file
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(defmacro prependf (s &rest strs)
"Prepend the given string variable with additional strings. The string variable is modified in-place."
`(setf ,s (concatenate 'string ,@strs ,s)))
(defvar *str* "foo")
(prependf *str* "bar")
(format T "~a~%" *str*)