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26 | <div class="titlepage"><div><div><h3 class="title"> | |
27 | <a name="boost_typetraits.reference.is_nothrow_move_constructible"></a><a class="link" href="is_nothrow_move_constructible.html" title="is_nothrow_move_constructible">is_nothrow_move_constructible</a> | |
28 | </h3></div></div></div> | |
29 | <pre class="programlisting"><span class="keyword">template</span> <span class="special"><</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">></span> | |
30 | <span class="keyword">struct</span> <span class="identifier">is_nothrow_move_constructible</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> | |
31 | </pre> | |
32 | <p> | |
33 | <span class="bold"><strong>Inherits:</strong></span> If T is a (possibly cv-qualified) | |
34 | type with a non-throwing move-constructor or a type without move-constructor | |
35 | but with non-throwing copy-constructor, then inherits from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a>, | |
36 | otherwise inherits from <a class="link" href="integral_constant.html" title="integral_constant">false_type</a>. | |
37 | Type <code class="computeroutput"><span class="identifier">T</span></code> must be a complete | |
38 | type. | |
39 | </p> | |
40 | <p> | |
41 | In other words, inherits from <a class="link" href="integral_constant.html" title="integral_constant">true_type</a> | |
42 | only if expression <code class="computeroutput"><span class="identifier">T</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">move</span><span class="special">(</span><span class="identifier">variable1</span><span class="special">))</span></code> won't throw (<code class="computeroutput"><span class="identifier">variable1</span></code> | |
43 | is a variable of type <code class="computeroutput"><span class="identifier">T</span></code>). | |
44 | </p> | |
45 | <p> | |
46 | <span class="bold"><strong>Compiler Compatibility:</strong></span> Without some (C++11 | |
47 | noexcept shall work correctly) help from the compiler, <code class="computeroutput"><span class="identifier">is_nothrow_move_constructible</span></code> | |
48 | will never report that a class or struct has a non-throwing copy-constructor; | |
49 | this is always safe, if possibly sub-optimal. Currently (February 2013) MSVC-12.0, | |
50 | Clang and GCC 4.7 have the necessary compiler support to ensure that this | |
51 | trait "just works". | |
52 | </p> | |
53 | <p> | |
54 | <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span> | |
55 | <span class="special"><</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">is_nothrow_move_constructible</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">></span></code> | |
56 | or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special"><</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">></span></code> | |
57 | </p> | |
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62 | Frederic Bron, Steve Cleary, Beman Dawes, Aleksey Gurtovoy, Howard Hinnant, | |
63 | Jesse Jones, Mat Marcus, Itay Maman, John Maddock, Alexander Nasonov, Thorsten | |
64 | Ottosen, Roman Perepelitsa, Robert Ramey, Jeremy Siek, Robert Stewart and Steven | |
65 | Watanabe<p> | |
66 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
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