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<RefEntry id="copy-string">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename copy-string.html>
<RefMeta>
<RefEntryTitle>copy-string</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>copy-string</RefName>
<RefPurpose>Return a string duplicated a specified number of times</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(copy-string string num)
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
Copies <literal>string</literal> <literal>num</literal> times and returns the result.</para>
</RefSect1>
<RefSect1><Title>Example</Title>
<para>
(copy-string "x" 3) returns "xxx"
</para>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
Norman Walsh, <ndw@nwalsh.com>
</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (copy-string string num)
;; Return a string duplicated a specified number of times
(if (<= num 0)
""
(let loop ((str string) (count (- num 1)))
(if (<= count 0)
str
(loop (string-append str string) (- count 1))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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