<RefEntry id="copy-string">
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<?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, &lt;ndw@nwalsh.com&gt;
</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>