* Reverse traversing of xml.collected()?
@ 2020-05-01 9:31 Gerben Wierda
2020-05-01 11:30 ` Hans Hagen
0 siblings, 1 reply; 4+ messages in thread
From: Gerben Wierda @ 2020-05-01 9:31 UTC (permalink / raw)
To: mailing list for ConTeXt users
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I’d like to travese the contents of an xml.collected() in a reverse order. I have
for connectionFromXML in xml.collected(viewFromXML,"/connection") do
parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML, rootFromOverrideXML)
end
I tried:
local relationTable = xml.collected(viewFromXML,"/connection")
for i=#relationTable, 1, -1 do
connectionFromXML = relationTable[i]
parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML, rootFromOverrideXML)
end
But apparently my lua knowledge is lacking (severely, I might say) as this ends with “attempt to get length of a function value “
What is the correct way to do it?
G
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* Re: Reverse traversing of xml.collected()?
2020-05-01 9:31 Reverse traversing of xml.collected()? Gerben Wierda
@ 2020-05-01 11:30 ` Hans Hagen
2020-05-01 12:06 ` Gerben Wierda
0 siblings, 1 reply; 4+ messages in thread
From: Hans Hagen @ 2020-05-01 11:30 UTC (permalink / raw)
To: mailing list for ConTeXt users, Gerben Wierda
On 5/1/2020 11:31 AM, Gerben Wierda wrote:
> I’d like to travese the contents of an xml.collected() in a reverse
> order. I have
>
> for connectionFromXML in xml.collected(viewFromXML,"/connection") do
> parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML,
> rootFromOverrideXML)
> end
>
> I tried:
>
> local relationTable = xml.collected(viewFromXML,"/connection")
> for i=#relationTable, 1, -1 do
> connectionFromXML = relationTable[i]
> parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML,
> rootFromOverrideXML)
> end
>
> But apparently my lua knowledge is lacking (severely, I might say) as
> this ends with “attempt to get length of a function value“
it's an iterator
> What is the correct way to do it?
xml.all
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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* Re: Reverse traversing of xml.collected()?
2020-05-01 11:30 ` Hans Hagen
@ 2020-05-01 12:06 ` Gerben Wierda
2020-11-10 14:06 ` Jano Kula
0 siblings, 1 reply; 4+ messages in thread
From: Gerben Wierda @ 2020-05-01 12:06 UTC (permalink / raw)
To: Hans Hagen; +Cc: mailing list for ConTeXt users
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> On 1 May 2020, at 13:30, Hans Hagen <j.hagen@xs4all.nl> wrote:
>
> On 5/1/2020 11:31 AM, Gerben Wierda wrote:
>> I’d like to travese the contents of an xml.collected() in a reverse order. I have
>> for connectionFromXML in xml.collected(viewFromXML,"/connection") do
>> parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML, rootFromOverrideXML)
>> end
>> I tried:
>> local relationTable = xml.collected(viewFromXML,"/connection")
>> for i=#relationTable, 1, -1 do
>> connectionFromXML = relationTable[i]
>> parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML, rootFromOverrideXML)
>> end
>> But apparently my lua knowledge is lacking (severely, I might say) as this ends with “attempt to get length of a function value“
>
> it's an iterator
>
>> What is the correct way to do it?
> xml.all
Tried to find documentation, but failed.
Tried this:
local relationTable = xml.all(viewFromXML,"/connection")
for i=#relationTable, 1, -1 do
connectionFromXML = relationTable[i]
parseXMLConnection( rootFromXML, connectionFromXML, viewFromXML, rootFromOverrideXML)
end
but it fails as well.
G
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
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___________________________________________________________________________________
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* Re: Reverse traversing of xml.collected()?
2020-05-01 12:06 ` Gerben Wierda
@ 2020-11-10 14:06 ` Jano Kula
0 siblings, 0 replies; 4+ messages in thread
From: Jano Kula @ 2020-11-10 14:06 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Hello!
On Fri, 1 May 2020 at 14:06, Gerben Wierda <gerben.wierda@rna.nl> wrote:
>
>
> On 1 May 2020, at 13:30, Hans Hagen <j.hagen@xs4all.nl> wrote:
>
> On 5/1/2020 11:31 AM, Gerben Wierda wrote:
>
> I’d like to travese the contents of an xml.collected() in a reverse order.
>
> it's an iterator
>
> What is the correct way to do it?
>
> xml.all
>
>
It had been awhile, so for the record.
I was looking for something similar and found out that adding a third
argument to the xml.collected reverses the iterations. Looks like the
argument has to be true in a boolean sense, so puting any "string" there
will do the trick.
for v in xml.collected(doc, "/chapter/section", "string") do
...
end
Jano
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___________________________________________________________________________________
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2020-05-01 9:31 Reverse traversing of xml.collected()? Gerben Wierda
2020-05-01 11:30 ` Hans Hagen
2020-05-01 12:06 ` Gerben Wierda
2020-11-10 14:06 ` Jano Kula
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