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defmacro

Interactive Common Lisp development: variables, functions, symbols, classes, methods, conditions… (www.n16f.net)

submitted 1 year ago by dzecniv@alien.top to c/lisp

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[–] SlowValue@alien.top 1 points 1 year ago

(lisp-implementation-type)
;; ⇒ "SBCL"
(lisp-implementation-version)
;; ⇒ "2.3.10"
(setf (symbol-function 'foo) #'1+)
;; ⇒ #
(let ((old-foo #'foo))
  (setf (symbol-function 'foo) #'1-)
  (funcall old-foo 42))
;; ⇒ 43 (6 bits, #x2B, #o53, #b101011)

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