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<RefEntry id="map">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename map.html>
<RefMeta>
<RefEntryTitle>map</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>map</RefName>
<RefPurpose>Implements map</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(map f #!rest xs)
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
Implements map</para>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
From Mulberry Tech. site (need better attribution)</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (map f #!rest xs)
;; Implements map
(let ((map1 (lambda (f xs) ; bootstrap version for unary F
(let loop ((xs xs))
(if (null? xs)
'()
(cons (f (car xs))
(loop (cdr xs))))))))
(cond ((null? xs)
'())
((null? (cdr xs))
(map1 f (car xs)))
(else
(let loop ((xs xs))
(if (null? (car xs))
'()
(cons (apply f (map1 car xs))
(loop (map1 cdr xs)))))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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