[Info-vax] DCL and scripting

[Dave Froble]

On 12/12/2018 9:16 PM, Arne Vajhøj wrote:
> On 12/12/2018 8:58 PM, Arne Vajhøj wrote:
>> On 12/12/2018 8:34 PM, Dave Froble wrote:
>>> On 12/12/2018 7:49 PM, Arne Vajhøj wrote:
>>>> Regex is a bit cryptic. But it can be useful.
>>>>
>>>> But I will say that all programmers should know SQL, regex and XPath.
>>>
>>> I know some SQL.  I don't even know what regex and xpath is.
>>
>> regex is a way to find patterns in text.
>>
>> XPath is a way to select parts of an XML document.
>>
>>>                                                              I guess
>>> according to you I should stick to flying.  Oh well, much more fun
>>> anyway.
>>>
>>> Now if it would just warm up ....
>>
>> Or maybe something to study during Christmas vacation.
>>
>> :-)
>
> Simple XPath example in VB.NET:
>
> Imports System
> Imports System.Xml
>
> Namespace DF2
>      Public Class Program
>          Public Shared Sub Main(args As String())
>              Dim xml As String = "<all>" & vbCrLf & _
>                  "    <one>" & vbCrLf & _
>                  "        <a id=""1""/>" & vbCrLf & _
>                  "        <b>A</b>" & vbCrLf & _
>                  "    </one>" & vbCrLf & _
>                  "    <one>" & vbCrLf & _
>                  "        <a id=""2""/>" & vbCrLf & _
>                  "        <b>BB</b>" & vbCrLf & _
>                  "    </one>" & vbCrLf & _
>                  "    <one>" & vbCrLf & _
>                  "        <a id=""3""/>" & vbCrLf & _
>                  "        <b>CCC</b>" & vbCrLf & _
>                  "    </one>" & vbCrLf & _
>                  "</all>"
>              Console.WriteLine(xml)
>              Dim doc As New XmlDocument()
>              doc.LoadXml(xml)
>              For Each n As XmlNode In doc.SelectNodes("/all/one")
>                  Console.WriteLine(n.SelectSingleNode("a/@id").Value & "
> " & n.SelectSingleNode("b/text()").Value)
>              Next
>          End Sub
>      End Class
> End Namespace
>
> Output:
>
> <all>
>      <one>
>          <a id="1"/>
>          <b>A</b>
>      </one>
>      <one>
>          <a id="2"/>
>          <b>BB</b>
>      </one>
>      <one>
>          <a id="3"/>
>          <b>CCC</b>
>      </one>
> </all>
> 1 A
> 2 BB
> 3 CCC
>
> Arne
>

Well, look at what you've done.  Now I seem to know more than I wanted 
to know.

Ok, sorry, a bit, for being a wise ass.  It just comes so natural.

I don't do much with text, and I seem to do quite well with Instr and 
Parse with XML, which I really do not like, when I need to.

As I may have mentioned before, I like things to be rather easy to 
understand, and I'll take that over complex and powerful many times.

But I believe you were trying to be helpful, and for that, thank you.

-- 
David Froble                       Tel: 724-529-0450
Dave Froble Enterprises, Inc.      E-Mail: davef at tsoft-inc.com
DFE Ultralights, Inc.
170 Grimplin Road
Vanderbilt, PA  15486