<a name="beast.ref.boost__beast__http__ext_list.exists"></a><a class="link" href="exists.html" title="http::ext_list::exists">http::ext_list::exists</a>
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<p>
- <a class="indexterm" name="idm45886650812528"></a>
+ <a class="indexterm" name="idm45873499999792"></a>
Return <code class="computeroutput"><span class="keyword">true</span></code>
if a token is present in the list.
</p>