1. Quine - a program that replicates itself
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Here's an interesting brain teaser - writing a quine in Euphoria. For those
of you that don't know what a quine is: A Quine is a program that replicates
itself exactly. A program that copies it's own code from disk does not
count.
I have attached my first quine if you are interested. This program takes
advantage of Euphoria's native atom/sequence structure, and methods of
displaying sequences. It does not write to disk, just to the monitor.
I would be interested in seeing different quines in Euphoria. Euphoria's
handling of sequences lends itself to many potential variations of quine.
Kind Regards,
Aidan.
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2. Re: Quine - a program that replicates itself
Been there, done that :)
Pete
On Fri, 18 Aug 2000 13:50:19 +1000, Aidan Bindoff <abindoff at ONE.NET.AU>
wrote:
>Here's an interesting brain teaser - writing a quine in Euphoria. For those
>of you that don't know what a quine is: A Quine is a program that
replicates
>itself exactly. A program that copies it's own code from disk does not
>count.
>I have attached my first quine if you are interested. This program takes
>advantage of Euphoria's native atom/sequence structure, and methods of
>displaying sequences. It does not write to disk, just to the monitor.
>
>I would be interested in seeing different quines in Euphoria. Euphoria's
>handling of sequences lends itself to many potential variations of quine.
>
>Kind Regards,
>Aidan.
>
3. Re: Quine - a program that replicates itself
Hi,
I tried to create a self-replicating program some weeks ago. I decided
not to use numbers to represent characters (such as writing '34' instead
of a quote); I thought it was not a very "elegant" approach.
Here is the program I wrote:
-- begin code
-- This is a self-replicating program
constant s='\\',n='\n',q='\"',t="%s",x=t&q&n&'&'&q,
msg="This is a self-replicating program",
l1="%s-- %sconstant s='%s',n='%sn',q='%s',t=%s,x=t&q&n&'&'&q,%s",
&"puts(1,%smsg=%s&q&msg&q&','&n)%s"
&"printf(1,l2,{{},n,q,q,n,q,q,n,q,q,n,n})%s"
printf(1,l1,{{},msg&n,s&s,s,s&q,q&t&q,n})
puts(1,"msg="&q&msg&q&','&n)
printf(1,"l1="&l1,{q&t,t,t,t,t,t,t&q&','&n})
printf(1,l2,{{},n,q,q,n,q,q,n,q,q,n,n})
-- end code
I hope you like it ;)
Regards,
Davi Figueiredo
davitf at usa.net
4. Re: Quine - a program that replicates itself
> constant s='\\',n='\n',q='\"',t="%s",x=t&q&n&'&'&q,
> msg="This is a self-replicating program",
> l1="%s-- %sconstant s='%s',n='%sn',q='%s',t=%s,x=t&q&n&'&'&q,%s",
> l2="%sprintf(1,l1,{{},msg&n,s&s,s,s&q,q&t&q,n})%s"
> &"puts(1,%smsg=%s&q&msg&q&','&n)%s"
> &"printf(1,%sl1=%s&l1,{q&t,t,t,t,t,t,t&q&','&n})%s"
> &"printf(1,%sl2=%s&l2,{q&t,x,t,t,x,t,t,x,t,t,x,t&q&n})%s"
> &"printf(1,l2,{{},n,q,q,n,q,q,n,q,q,n,n})%s"
> printf(1,l1,{{},msg&n,s&s,s,s&q,q&t&q,n})
> puts(1,"msg="&q&msg&q&','&n)
> printf(1,"l1="&l1,{q&t,t,t,t,t,t,t&q&','&n})
> printf(1,"l2="&l2,{q&t,x,t,t,x,t,t,x,t,t,x,t&q&n})
> printf(1,l2,{{},n,q,q,n,q,q,n,q,q,n,n})
> I hope you like it ;)
>
> Regards,
> Davi Figueiredo
> davitf at usa.net
>
Davi, very nice. More elegant? "This is a self-replicating program" is
pretty brassy! 
Kind Regards,
Aidan.
5. Re: Quine - a program that replicates itself
So it prints its code out. Whoop dee doo
6. Re: Quine - a program that replicates itself
>So it prints its code out. Whoop dee doo
>
So you run around a post-apocolyptic city with an assortment of guns.
Whoop dee doo
