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Defining a scheme sexp comment with a reader macro

CL-USER(1): (set-dispatch-macro-character #\# #\; (lambda (s c n) c n (read s t nil t) (values)))

CL-USER(2): (+ 3 (+ 2 3) 1)

9
CL-USER(3): (+ 3 #;(+ 2 3) 1)

4

Special thanks to Ed Langley on #common-lisp:matrix.org.

Tags

  • type: documentation
  • keywords: lisp, scheme, tips, tricks

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