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if

Name: Anonymous 2008-01-12 16:36

how do i wrote if statements in LISP?

Name: Anonymous 2008-01-12 17:57

(when <cond>

   <s-exps>*)

(unless (not <cond>)

    <s-exps>*)

But you really should define a macro:

(defmacro .if (test if-true &body if-false)

   `(progn (when ,test ,if-true) (when (not ,test) ,@if-false)))



.IF

0] (.if t (print 3) (print 4))





NIL3 

0]

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1 Name: Anonymous 2008-01-12 16:36

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Name: Anonymous 2008-01-12 16:36

Name: Anonymous 2008-01-12 17:57