 a valid range. </p>
<p>The range of characters specified by [begin,end) contains a valid string-based representation of a regular expression. </p>
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<td><p><span class="term">Returns:</span></p></td>
<td><p>A <a class="link" href="basic_regex.html" title="Struct template basic_regex">basic_regex</a> object corresponding to the regular expression represented by the character range. </p></td>
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<td><p><span class="term">Throws:</span></p></td>
<td>
<a class="link" href="regex_error.ht