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<div class="titlepage"><div><div><h3 class="title">
<a name="boost_asio.reference.ProtoAllocator"></a><a class="link" href="ProtoAllocator.html" title="Proto-allocator requirements">Proto-allocator
      requirements</a>
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<p>
        A type <code class="computeroutput">A</code> meets the proto-allocator requirements if <code class="computeroutput">A</code>
        is <code class="computeroutput">CopyConstructible</code> (C++Std [copyconstructible]), <code class="computeroutput">Destructible</code>
        (C++Std [destructible]), and <code class="computeroutput">allocator_traits&lt;A&gt;::rebind_alloc&lt;U&gt;</code>
        meets the allocator requirements (C++Std [allocator.requirements]), where
        <code class="computeroutput">U</code> is an object type. [<span class="emphasis"><em>Note:</em></span> For example,
        <code class="computeroutput">std::allocator&lt;void&gt;</code> meets the proto-allocator requirements
        but not the allocator requirements. &#8212;<span class="emphasis"><em>end note</em></span>] No constructor,
        comparison operator, copy operation, move operation, or swap operation on
        these types shall exit via an exception.
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