p;:&nbsp;<span class="constructor">Str</span>.regexp&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;(string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string)&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;replace_matched&nbsp;:&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;string<br>
&nbsp;&nbsp;<span class="key