 href="../../../expressions.html#header.boost.log.expressions.attr_fwd_hpp" title="Header &lt;boost/log/expressions/attr_fwd.hpp&gt;">boost/log/expressions/attr_fwd.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> FallbackPolicyT <span class="special">=</span> <span class="identifier">fallback_to_none</span><span class="special">,</span> 
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