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<RefEntry id="node-list-first-element">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename node-list-first-element.html>
<RefMeta>
<RefEntryTitle>node-list-first-element</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>node-list-first-element</RefName>
<RefPurpose>Return the first element node in a node list</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(node-list-first-element nodelist)
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
This function returns the first node in a node list which is
an element (as opposed to a PI or anything else that might appear
in a node list).</para>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
Norman Walsh, <ndw@nwalsh.com>
</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (node-list-first-element nodelist)
;; Return the first element node in a node list
(let loop ((nl nodelist))
(if (node-list-empty? nl)
(empty-node-list)
(if (gi (node-list-first nl))
(node-list-first nl)
(loop (node-list-rest nl))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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