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How to define a function in AutoLISP with arbitrary arguments


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Do you mean 'optional' arguments?


For LISP, the answer is no, the number of arguments in the function definition must be supplied when calling the function - such arguments may be nil however:


(defun example ( arg1 arg2 arg3 )
 (print arg1)
 (print arg2)
 (print arg3)


(example "ABC" 123 nil)

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Do you mean 'optional' arguments?

Thank you Lee for correcting my writing. I learn from you more than programming:D.

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You can pass an unknown number of arguments in a list then have the function parse the list;


(defun example (aug1)

(foreach item aug1
(print item)

;;;Calling the function
(example ‘( “Hello” “Aloha” “Hola” “Ciao” “Guten Tag[color=black][font=Arial]”[/font][/color]))

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