- From: <bugzilla@jessica.w3.org>
- Date: Tue, 12 Feb 2013 10:23:38 +0000
- To: public-qt-comments@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=19158
Michael Kay <mike@saxonica.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #5 from Michael Kay <mike@saxonica.com> ---
The WG is proposing to add a map:fold function that takes as argument a
callback function which is called once for each entry in the map, with three
arguments: an accumulator value, and the key and value from the map entry.
Noted that this could be used to implement various other functions including
ones we already have such as map:keys() and new functions such as map:values()
which returns the flattened values.
Also noted that in principle map:fold could be implemented in terms of
fn:fold-left applied to the map:keys() sequence.
Use cases include grouping the entries in the map.
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Received on Tuesday, 12 February 2013 10:23:39 UTC