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>node-list-filter-by-not-gi</H1
><DIV
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><A
NAME="AEN1085"
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><H2
>Name</H2
>node-list-filter-by-not-gi -- Returns selected elements from a node list</DIV
><DIV
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><PRE
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>(node-list-filter-by-not-gi nodelist gilist)</PRE
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><DIV
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><A
NAME="AEN1091"
></A
><H2
>Description</H2
><P
>Returns a node list containing all the nodes from <TT
CLASS="LITERAL"
>nodelist</TT
> whose
GIs are NOT members of <TT
CLASS="LITERAL"
>gilist</TT
>. The order of nodes in the node list
is preserved.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN1096"
></A
><H2
>Author</H2
><P
>Norman Walsh, <ndw@nwalsh.com></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN1099"
></A
><H2
>Source Code</H2
><PRE
CLASS="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))))))</PRE
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