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[Bug 29080] array:members

From: <bugzilla@jessica.w3.org>
Date: Fri, 10 Jun 2016 20:16:15 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-29080-523-C50qg74LPU@http.www.w3.org/Bugs/Public/>

--- Comment #6 from Christian Gruen <christian.gruen@gmail.com> ---
I see that the implicit conversion of array members to new arrays is probably
not as obvious as I thought it would possibly be. And indeed it may be
necessary to flatten/atomize the looped entries.

To continue with John’s example (thanks for your helpful remarks), my notion
was that people would automatically use array:join to rebuild arrays:

  let $arr := [1, 2, (), 4]
  return array:join(
    for $i in array:members($arr)
    where exists($i?*)
    return $i

Or, shorter:


As the example shows, the following check would always yield true:

  fn:deep-equal($array, array:join(array:members($array))

Originally, I expected array:for-each to be the best candidate to process all
array entries, but it has been decided that the function will always return a
new array.

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