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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-1.lisp Normal file
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(eval-when (:compile-toplevel :load-toplevel :execute)
(defun factorial ...))

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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-2.lisp Normal file
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(defmacro ct-factorial (n)
(factorial n))
...
(print (ct-factorial 10))

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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-3.lisp Normal file
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(defmacro ct-factorial (n)
`(quote ,(factorial n)))
; or, equivalently,
(defmacro ct-factorial (n)
`',(factorial n))

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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-4.lisp Normal file
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(print (load-time-value (factorial 10)))

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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-5.lisp Normal file
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(print (#. (factorial 10)))

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Task/Compile-time-calculation/Common-Lisp/compile-time-calculation-6.lisp Normal file
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(define-compiler-macro factorial (&whole form arg)
(if (constantp arg)
(factorial arg)
form))