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barbie (2653)

  reversethis-{ku. ... m} {ta} {eibrab}

Leader of [] and a CPAN author []. Co-organised YAPC::Europe in 2006 and the 2009 QA Hackathon, responsible for the YAPC Conference Surveys [] and the QA Hackathon [] websites. Also the current caretaker for the CPAN Testers websites and data stores.

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Journal of barbie (2653)

Monday April 23, 2007
12:07 PM

When Persistent isn't!

[ #33080 ]

"A PURL is a Persistent Uniform Resource Locator ..."

So says Except the Namespace URL used within XML::Atom (, doesn't exist. I'm assuming someone actually created a PURL in the first place, if they didn't then no biscuits for Ben or Miyagawa ;)

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  • IIRC, [] is the namespace for the 0.3 (i.e draft) spec. The 1.0 namespace is []. The following will generate a feed with the 1.0 namespace:

    XML::Atom::Feed->new( Version => 1.0 )

    • I was testing with Atom 0.3 :)

      As it happens one of the recommended ways to switch to Version 1.0 ($XML::Atom::DefaultVersion = "1.0";) doesn't work either :(

  • XML namespaces use URIs as identifiers – Uniform Resource Identifiers. URIs need not actually be resolvable to anything. Even if a URI starts with the “http:” scheme, that means nothing more than that HTTP ownership rules apply; it does not mean there has to be a page there if you actually try to dereference the URI. (HTTP ownership rules are that whoever owns the DNS for the host part of the HTTP URI can mint new HTTP URIs with that host part.)

    There used to be a distinction such that UR

    • I think you missed the main point of the post. The PURL, as in Persistent URL, didn't exist.

      I know the difference between a URL and a URI. The fact that a URI didn't resolve didn't prompt the post. The fact that it used a supposedly persistent address did ;)