Hello,

 

Is it an option to add a "dataSet" as datatype in xquery, like for example
the "array"?

My case is that I'm having this high-order function that iterates through a
sequence and start a given function on each item until it receives back an
'nothing', than it breaks off.

This works great except with sequences which I ( have to) use for
"dataSets": there are occasions that I need to return an empty set without
breaking of the iteration.

In xquery there are empty arrays, empty maps and empty elements but no empty
"dataset", like - set {} -

 

Thanx,

 

Rob Stapper

 

PS.

- definition for "dataset" could be something like: - a datatype
representing a dynamic collection of data-items -.

 

- Since the "dataSet" is an datatype, "dataSets" could hold other dataSets.

- Function "for-each" (  no particular sequence) could take a "dataset" but
"fold-left" and "fold-right" ( particular sequence) could not.

- I don't know if a "fold"-function ( no particular sequence) would make
sense, haven't thought about it enough.

 



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