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<RefEntry id="join">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename join.html>
<RefMeta>
<RefEntryTitle>join</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>join</RefName>
<RefPurpose>Joins a list of strings together</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(join slist #!optional (space " "))
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
Given a list of strings and a space string, returns the string
that results from joining all the strings in the list together,
separated by space.
</para>
<variablelist>
<varlistentry><term><literal>slist</literal></term>
<listitem>
<para>
The list of strings.
</para>
</listitem>
</varlistentry>
<varlistentry><term><literal>space</literal></term>
<listitem>
<para>
The string to place between each member of the list. Defaults to
a single space.
</para>
</listitem>
</varlistentry>
</variablelist>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
David Carlisle</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (join slist #!optional (space " "))
;; Joins a list of strings together
(letrec ((loop (lambda (l result)
(if (null? l)
result
(loop (cdr l) (cons space (cons (car l) result)))))))
(if (null? slist)
""
(apply string-append (cons (car slist)
(loop (reverse (cdr slist)) '() ))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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