<div dir="ltr">Can you tell me how you see a dataSet being different to an array?<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 19 July 2015 at 10:27, Rob Stapper <span dir="ltr"><<a href="mailto:r.stapper@lijbrandt.nl" target="_blank">r.stapper@lijbrandt.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="NL"><div><p class="MsoNormal">Hello,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><span lang="EN-US">Is it an option to add a “dataSet” as datatype in xquery, like for example the “array”?<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">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.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">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.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">In xquery there are empty arrays, empty maps and empty elements but no empty “dataset”, like - set {} -<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">Thanx,<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">Rob Stapper<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">PS.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">- definition for “dataset” could be something like: - a datatype representing a dynamic collection of data-items –.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-US">- Since the “dataSet” is an datatype, “dataSets” could hold other dataSets.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">- Function “for-each” ( no particular sequence) could take a “dataset” but “fold-left” and “fold-right” ( particular sequence) could not.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US">- I don’t know if a “fold”-function ( no particular sequence) would make sense, haven’t thought about it enough.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p></div>
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