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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Van:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Rob Stapper [mailto:r.stapper@lijbrandt.nl] <br><b>Verzonden:</b> zondag 19 juli 2015 15:10<br><b>Aan:</b> 'Adam Retter'<br><b>Onderwerp:</b> RE: [xquery-talk] set as datatype in xquery<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Sure I can do that because after all an array is a glorified dataset. But I won’t </span><span lang=EN-US style='font-size:11.0pt;font-family:Wingdings;color:#1F497D'>J</span><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Question is: does the W3C as a standardization-organization, want its product to settle for a workaround like that?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Van:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:talk-bounces@x-query.com">talk-bounces@x-query.com</a> [<a href="mailto:talk-bounces@x-query.com">mailto:talk-bounces@x-query.com</a>] <b>Namens </b>Adam Retter<br><b>Verzonden:</b> zondag 19 juli 2015 13:54<br><b>Aan:</b> Rob Stapper<br><b>CC:</b> <a href="mailto:talk@x-query.com">talk@x-query.com</a><br><b>Onderwerp:</b> Re: [xquery-talk] set as datatype in xquery<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Okay I see what you are getting at but in light of the fact that there is not a set type, but there is an array type, could you not just use the array type with the XPath 3.1 function arrays:for-each?<o:p></o:p></p></div><div><p class=MsoNormal>Regards polluting your code, you would only have that if you chose to access the array by index, instead you could just stick to for-each.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Well, I see an array as a specialized dataSet. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I see an array is an indexed, c.q. subscripted, dataset.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Or I see a dataset is an array without the indexing-mechanism.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Or you could also see a dataset as an map without the mapping-mechanism.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>What remains is a dynamic set with data-items where the items can individually be processed, e.g. by a for-each function, but not individually be addressed.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Using arrays as datasets pollutes my code with its addressing mechanism.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Especially for a function language expressiveness of the language should be one of the highest goods.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Rob</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Van:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Adam Retter [mailto:<a href="mailto:adam.retter@googlemail.com" target="_blank">adam.retter@googlemail.com</a>] <br><b>Verzonden:</b> zondag 19 juli 2015 12:02<br><b>Aan:</b> Rob Stapper<br><b>CC:</b> <a href="mailto:talk@x-query.com" target="_blank">talk@x-query.com</a><br><b>Onderwerp:</b> Re: [xquery-talk] set as datatype in xquery</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Can you tell me how you see a dataSet being different to an array?<o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On 19 July 2015 at 10:27, Rob Stapper <<a href="mailto:r.stapper@lijbrandt.nl" target="_blank">r.stapper@lijbrandt.nl</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hello,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Is it an option to add a “dataSet” as datatype in xquery, like for example the “array”?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><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.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>In xquery there are empty arrays, empty maps and empty elements but no empty “dataset”, like - set {} -</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Thanx,</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Rob Stapper</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>PS.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>- definition for “dataset” could be something like: - a datatype representing a dynamic collection of data-items –.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>- Since the “dataSet” is an datatype, “dataSets” could hold other dataSets.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>- Function “for-each” ( no particular sequence) could take a “dataset” but “fold-left” and “fold-right” ( particular sequence) could not.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>- I don’t know if a “fold”-function ( no particular sequence) would make sense, haven’t thought about it enough.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> <o:p></o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=2 width="99%" noshade style='color:#909090' align=center></div><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 style='border-collapse:collapse'><tr><td style='padding:0cm 11.25pt 0cm 6.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="https://www.avast.com/antivirus" target="_blank"><span style='border:solid windowtext 1.0pt;padding:0cm;text-decoration:none'><img border=0 width=100 height=100 id="_x0000_i1026" src="cid:~WRD000.jpg" alt="Afbeelding verwijderd door afzender. Avast logo"></span></a><o:p></o:p></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p><span style='font-family:"Calibri","sans-serif";color:#3D4D5A'>Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. <br><a href="https://www.avast.com/antivirus" target="_blank">www.avast.com</a> </span><o:p></o:p></p></td></tr></table><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>_______________________________________________<br><a href="mailto:talk@x-query.com" target="_blank">talk@x-query.com</a><br><a href="http://x-query.com/mailman/listinfo/talk" target="_blank">http://x-query.com/mailman/listinfo/talk</a><o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br><br clear=all><br>-- <o:p></o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Adam Retter<br><br>skype: adam.retter<br>tweet: adamretter<br><a href="http://www.adamretter.org.uk" target="_blank">http://www.adamretter.org.uk</a><o:p></o:p></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=2 width="99%" noshade style='color:#909090' align=center></div><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 style='border-collapse:collapse'><tr><td style='padding:0cm 11.25pt 0cm 6.0pt'><p class=MsoNormal><a href="https://www.avast.com/antivirus" target="_blank"><span style='border:solid windowtext 1.0pt;padding:0cm;text-decoration:none'><img border=0 width=100 height=100 id="_x0000_i1028" src="cid:~WRD000.jpg" alt="Afbeelding verwijderd door afzender. Avast logo"></span></a><o:p></o:p></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p><span style='font-family:"Calibri","sans-serif";color:#3D4D5A'>Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. <br><a href="https://www.avast.com/antivirus" target="_blank">www.avast.com</a> <o:p></o:p></span></p></td></tr></table><p class=MsoNormal><o:p> </o:p></p></div></blockquote></div><p class=MsoNormal><br><br clear=all><br>-- <o:p></o:p></p><div><p class=MsoNormal>Adam Retter<br><br>skype: adam.retter<br>tweet: adamretter<br><a href="http://www.adamretter.org.uk" target="_blank">http://www.adamretter.org.uk</a><o:p></o:p></p></div></div></div></div></div>
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