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Frank DG1SBG  
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 More options Aug 10 2012, 9:07 am
Newsgroups: comp.lang.lisp
From: Frank DG1SBG <dg1...@googlemail.com>
Date: Fri, 10 Aug 2012 15:07:31 +0200
Local: Fri, Aug 10 2012 9:07 am
Subject: Re: computed goto
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zermelo <zerm...@nospam.teletu.it> writes:
> I need to code something like this:
> (let ((n 2))
> (tagbody
>          (go n)
>          1 (print 1)
>          2 (print 2)))
> => expected 2

> Is there a way I can pass an expression to the go form?

> Thanks
> Ps
> I don’t need a ‘goto considered harmful’ sermon :)

Ahem - like this?

(defun print-value (value)
  (format *debug-io* "Value is ~s.~&" value))

(defun jump-on-value (value)
  (cond
    ((= value 1)
     (format *debug-io* "~%Hi there in 1.~&")
     (print-value value))
    ((= value 2)
     (format *debug-io* "~%Hi there in 2.~&")
     (print-value value))))

I'm pretty sure this isn't what you were looking for. So - what are you
looking for?

Frank


 
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