  58</span>&#160;  }</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;  <span class="comment">// hash of _s[0:k]</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;  <span class="keywordtype">void</span> init(<span class="keyword">const</span> <span class="keywordtype">char</span>* _s) {</div><div class="line"><a name="l00062"></a><span class="lineno"> 