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<a name="boost_asio.overview.cpp2011.variadic"></a><a class="link" href="variadic.html" title="Variadic Templates">Variadic Templates</a>
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When supported by a compiler, Boost.Asio can use variadic templates to
implement the <a class="link" href="../../reference/basic_socket_streambuf/connect.html" title="basic_socket_streambuf::connect">basic_socket_streambuf::connect()</a>
and <a class="link" href="../../reference/basic_socket_iostream/connect.html" title="basic_socket_iostream::connect">basic_socket_iostream::connect()</a>
functions.
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Support for variadic templates is automatically enabled for <code class="literal">g++</code>
4.3 and later, when the <code class="literal">-std=c++0x</code> or <code class="literal">-std=gnu++0x</code>
compiler options are used. It may be disabled by defining <code class="computeroutput"><span class="identifier">BOOST_ASIO_DISABLE_VARIADIC_TEMPLATES</span></code>,
or explicitly enabled for other compilers by defining <code class="computeroutput"><span class="identifier">BOOST_ASIO_HAS_VARIADIC_TEMPLATES</span></code>.
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