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<RefEntry id="node-list-filter-by-not-gi">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename node-list-filter-by-not-gi.html>
<RefMeta>
<RefEntryTitle>node-list-filter-by-not-gi</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>node-list-filter-by-not-gi</RefName>
<RefPurpose>Returns selected elements from a node list</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(node-list-filter-by-not-gi nodelist gilist)
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
Returns a node list containing all the nodes from <literal>nodelist</literal> whose
GIs are NOT members of <literal>gilist</literal>. The order of nodes in the node list
is preserved.</para>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
Norman Walsh, <ndw@nwalsh.com>
</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (node-list-filter-by-not-gi nodelist gilist)
;; Returns selected elements from a node list
(let loop ((result (empty-node-list)) (nl nodelist))
(if (node-list-empty? nl)
result
(if (member (gi (node-list-first nl)) gilist)
(loop result (node-list-rest nl))
(loop (node-list result (node-list-first nl))
(node-list-rest nl))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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