I think that, most preferred XPath expression for this requirement would be
'child::*[1]', or '*[1]' (I shall usually won't use the explicit axis name
in this case).
Other than efficiency, I think other principles of writing good XPath code
might also suggest above expressions.
On Sun, May 12, 2019 at 5:13 PM Costello, Roger L.
costello(_at_)mitre(_dot_)org <
xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hello XSLT experts!
I want to retrieve the first child element. The children consist of a
<Total_Size> element followed by many <String> elements (perhaps thousands
of <String> elements).
<COFF_String_Table>
<Total_Size>4443</Total_Size>
<String>.eh_frame</String>
<String>.debug_aranges</String>
<String>.debug_info</String>
...
</COFF_String_Table>
Question: What is the most efficient XPath for selecting the first child
element (the <Total_Size> element)? Assume the context node is the
<COFF_String_Table> element. Which of these is the most efficient XPath
expression:
(a) child::*[1]
(b) child::Total_Size
(c) something else (what?)
--
Regards,
Mukul Gandhi
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