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<pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <span class="identifier">is_complete</span> <span class="special">:</span> <span class="keyword">public</span> <em class="replaceable"><code><a class="link" href="integral_constant.html" title="integral_constant">true_type</a>-or-<a class="link" href="integral_constant.html" title="integral_constant">false_type</a></code></em> <span class="special">{};</span>
</pre>
<p>
<span class="bold"><strong>Inherits:</strong></span> If <code class="computeroutput"><span class="identifier">T</span></code>
is a complete type then inherits from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a>,
otherwise inherits from <a class="link" href="integral_constant.html" title="integral_constant">false_type</a>.
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<div class="important"><table border="0" summary="Important">
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<th align="left">Important</th>
</tr>
<tr><td align="left" valign="top"><p>
This trait is designed for one use only: to trigger a hard error (via a
<code class="computeroutput"><span class="keyword">static_assert</span></code>) when a template
is accidentally instantiated on an incomplete type. Any other use case
will cause ODR violations as the "completeness" of type <code class="computeroutput"><span class="identifier">T</span></code> may vary at different points in the
current translation unit, as well as across translations units. <span class="emphasis"><em><span class="bold"><strong>In particular this trait should never ever be used to change
code paths depending on the completeness of a type</strong></span></em></span>.
</p></td></tr>
</table></div>
<p>
<span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
<span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_complete</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
</p>
<p>
<span class="bold"><strong>Compiler Compatibility:</strong></span> Requires C++11 SFINAE-expressions
to function fully. The macro <code class="computeroutput"><span class="identifier">BOOST_TT_HAS_WORKING_IS_COMPLETE</span></code>
is defined when the trait is fully functional.
</p>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2000, 2011 Adobe Systems Inc, David Abrahams,
Frederic Bron, Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant,
Jesse Jones, Mat Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten
Ottosen, Roman Perepelitsa, Robert Ramey, Jeremy Siek, Robert Stewart and Steven
Watanabe<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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@ -199,6 +199,10 @@
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</li>
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</li>
@ -208,6 +212,10 @@
</dt>
<dd><div class="index"><ul class="index" style="list-style-type: none; ">
<li class="listitem" style="list-style-type: none">
<p><span class="index-entry-level-0">check</span></p>
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</li>
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<p><span class="index-entry-level-0">common_type</span></p>
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@ -734,6 +742,13 @@
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<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_complete.html" title="is_complete"><span class="index-entry-level-1">BOOST_TT_HAS_WORKING_IS_COMPLETE</span></a></p></li>
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<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_complex.html" title="is_complex"><span class="index-entry-level-0">is_complex</span></a></p></li>
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<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/reference/is_const.html" title="is_const"><span class="index-entry-level-0">is_const</span></a></p></li>
@ -871,6 +886,7 @@
<p><span class="index-entry-level-0">Operator Type Traits</span></p>
<div class="index"><ul class="index" style="list-style-type: none; ">
<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">any</span></a></p></li>
<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">check</span></a></p></li>
<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">dont_care</span></a></p></li>
<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">has_equal_to</span></a></p></li>
<li class="listitem" style="list-style-type: none"><p><a class="link" href="../boost_typetraits/category/value_traits/operators.html" title="Operator Type Traits"><span class="index-entry-level-1">has_operator</span></a></p></li>

29
doc/is_complete.qbk Normal file
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@ -0,0 +1,29 @@
[/
Copyright 2018 John Maddock.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
]
[section:is_complete is_complete]
template <class T>
struct is_complete : public __tof {};
__inherit If `T` is a complete type then inherits from __true_type,
otherwise inherits from __false_type.
[important This trait is designed for one use only: to trigger a hard error (via a `static_assert`) when a template
is accidentally instantiated on an incomplete type. Any other use case will cause ODR violations as the "completeness"
of type `T` may vary at different points in the current translation unit, as well as across translations units.
['[*In particular this trait should never ever be used to change code paths depending on the completeness of a type]].]
__header ` #include <boost/type_traits/is_complete.hpp>` or ` #include <boost/type_traits.hpp>`
__compat Requires C++11 SFINAE-expressions to function fully. The macro `BOOST_TT_HAS_WORKING_IS_COMPLETE` is defined
when the trait is fully functional.
[endsect]

1
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@ -291,6 +291,7 @@ See __has_trivial_constructor.
[include is_assignable.qbk]
[include is_base_of.qbk]
[include is_class.qbk]
[include is_complete.qbk]
[include is_complex.qbk]
[include is_compound.qbk]
[include is_const.qbk]