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[platform/upstream/boost.git] / doc / html / boost / xpressive / before.html
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 <title>Function template before</title>
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 <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../../Expr.html" title="Concept Expr">Expr</a><span class="special">&gt;</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="identifier">before</span><span class="special">(</span><span class="identifier">Expr</span> <span class="keyword">const</span> <span class="special">&amp;</span> expr<span class="special">)</span><span class="special">;</span></pre></div>
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-<a name="id3918957"></a><h2>Description</h2>
+<a name="idp537668960"></a><h2>Description</h2>
 <p>before(expr) succeeds if the expr sub-expression would match at the current position in the sequence, but expr is not included in the match. For instance, before("foo") succeeds if we are before a "foo". Look-ahead assertions can be negated with the bit-compliment operator.</p>
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 <td><p><span class="term">Parameters:</span></p></td>
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 <td><p><span class="term"><code class="computeroutput">expr</code></span></p></td>
 <td><p>The sub-expression to put in the look-ahead assertion. </p></td>