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Re: Self-replicating XML

• From: Hermann Stamm-Wilbrandt <STAMMW@de.ibm.com>
• To: Michael Kay <mike@saxonica.com>
• Date: Thu, 17 Oct 2013 10:27:09 +0200

Agreed,

here is a real XSLT quine:
http://www2.informatik.hu-berlin.de/~obecker/XSLT/#quine


Mit besten Gruessen / Best wishes,

Hermann Stamm-Wilbrandt
Level 3 support for XML Compiler team and Fixpack team lead
WebSphere DataPower SOA Appliances
https://www.ibm.com/developerworks/mydeveloperworks/blogs/HermannSW/
https://twitter.com/HermannSW/     http://www.stamm-wilbrandt.de/ce/
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  From:       Michael Kay <mike@saxonica.com>                                                                                     
                                                                                                                                  
  To:         "Costello, Roger L." <costello@mitre.org>,                                                                          
                                                                                                                                  
  Cc:         "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>                                                                     
                                                                                                                                  
  Date:       10/16/2013 11:35 PM                                                                                                 
                                                                                                                                  
  Subject:    Re:  Self-replicating XML                                                                                  
                                                                                                                                  






On 16 Oct 2013, at 21:01, Costello, Roger L. wrote:

> Hi Folks,
>
> [Definition]
> 		 A quine is a computer program which takes no input
> 		 and produces a copy of its own source code as its only
> 		 output. The standard terms for these programs in the
> 		 computability theory and computer science literature
> 		 are self-replicating programs, self-reproducing programs,
> 		 and self-copying programs. [1]
>
> Below is an XSLT program that is quine.

Not on that definition it isn't. It calls the document() function, so it
can't claim to "take no input". A program that copies its input, and is
then run on itself, is not an interesting quine.

Michael Kay
Saxonica


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• References:
  • Self-replicating XML
    • From: "Costello, Roger L." <costello@mitre.org>
  • Re: Self-replicating XML
    • From: Michael Kay <mike@saxonica.com>