<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>