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Micro template library A library for building device drivers
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  94. <div class="title">detection.h File Reference</div>  </div>

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  98. <p>Detection idiom based on WG21's N4502 [<a class="el" href="detection_8h.html#n4502">n4502</a> 1] from Walter E. Brown.  

  99. <a href="#details">More...</a></p>

  100. <div class="textblock"><code>#include &lt;<a class="el" href="impl_8h_source.html">utl/core/impl.h</a>&gt;</code><br />

  101. <code>#include &lt;<a class="el" href="operations_8h_source.html">utl/meta/operations.h</a>&gt;</code><br />

  102. <code>#include &lt;type_traits&gt;</code><br />

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  107. Classes</h2></td></tr>

  108. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structutl_1_1meta_1_1nat__.html">utl::meta::nat_</a></td></tr>

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  110. <tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structutl_1_1meta_1_1detail_1_1detector.html">utl::meta::detail::detector&lt; Default, AlwaysVoid, Op, Args &gt;</a></td></tr>

  111. <tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>

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  126. Typedefs</h2></td></tr>

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  128. <tr class="memitem:gac16d50de47cf57734433e9ea636522c5"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__detection.html#gac16d50de47cf57734433e9ea636522c5">utl::meta::void_</a> = void</td></tr>

  129. <tr class="memdesc:gac16d50de47cf57734433e9ea636522c5"><td class="mdescLeft">&#160;</td><td class="mdescRight">void_ type alias  <a href="group__detection.html#gac16d50de47cf57734433e9ea636522c5">More...</a><br /></td></tr>

  130. <tr class="separator:gac16d50de47cf57734433e9ea636522c5"><td class="memSeparator" colspan="2">&#160;</td></tr>

  131. <tr class="memitem:gae7373c997420d16cf37e542eb3cfa3ad"><td class="memTemplParams" colspan="2">template&lt;typename... &gt; </td></tr>

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  133. <tr class="memdesc:gae7373c997420d16cf37e542eb3cfa3ad"><td class="mdescLeft">&#160;</td><td class="mdescRight">void_t type alias  <a href="group__detection.html#gae7373c997420d16cf37e542eb3cfa3ad">More...</a><br /></td></tr>

  134. <tr class="separator:gae7373c997420d16cf37e542eb3cfa3ad"><td class="memSeparator" colspan="2">&#160;</td></tr>

  135. <tr class="memitem:a835827cb3116483228d6f7f774b68970"><td class="memTemplParams" colspan="2">template&lt;typename Default , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  136. <tr class="memitem:a835827cb3116483228d6f7f774b68970"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta_1_1detail.html#a835827cb3116483228d6f7f774b68970">utl::meta::detail::detected_or</a> = detector&lt; Default, void, Op, Args... &gt;</td></tr>

  137. <tr class="memdesc:a835827cb3116483228d6f7f774b68970"><td class="mdescLeft">&#160;</td><td class="mdescRight">helper for detected_or_t  <a href="namespaceutl_1_1meta_1_1detail.html#a835827cb3116483228d6f7f774b68970">More...</a><br /></td></tr>

  138. <tr class="separator:a835827cb3116483228d6f7f774b68970"><td class="memSeparator" colspan="2">&#160;</td></tr>

  139. <tr class="memitem:a5329219a9d2f195421a78d8e07873507"><td class="memTemplParams" colspan="2">template&lt;template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  140. <tr class="memitem:a5329219a9d2f195421a78d8e07873507"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a5329219a9d2f195421a78d8e07873507">utl::meta::is_detected</a> = typename detail::detector&lt; nat_, void, Op, Args... &gt;::detected</td></tr>

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  142. <tr class="memitem:aa654a286b3bc8e6d8116ee1f57087110"><td class="memTemplParams" colspan="2">template&lt;template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  143. <tr class="memitem:aa654a286b3bc8e6d8116ee1f57087110"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#aa654a286b3bc8e6d8116ee1f57087110">utl::meta::detected_t</a> = eval&lt; detail::detector&lt; nat_, void, Op, Args... &gt; &gt;</td></tr>

  144. <tr class="separator:aa654a286b3bc8e6d8116ee1f57087110"><td class="memSeparator" colspan="2">&#160;</td></tr>

  145. <tr class="memitem:a8fd055bc6c6c3b1d551e9605aa35644c"><td class="memTemplParams" colspan="2">template&lt;typename Default , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  146. <tr class="memitem:a8fd055bc6c6c3b1d551e9605aa35644c"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a8fd055bc6c6c3b1d551e9605aa35644c">utl::meta::detected_or_t</a> = eval&lt; detail::detected_or&lt; Default, Op, Args... &gt; &gt;</td></tr>

  147. <tr class="separator:a8fd055bc6c6c3b1d551e9605aa35644c"><td class="memSeparator" colspan="2">&#160;</td></tr>

  148. <tr class="memitem:ad5224ef66e8f40efaaf3ad3d605dd629"><td class="memTemplParams" colspan="2">template&lt;typename Expected , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  149. <tr class="memitem:ad5224ef66e8f40efaaf3ad3d605dd629"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#ad5224ef66e8f40efaaf3ad3d605dd629">utl::meta::is_detected_exact</a> = eval&lt; same_&lt; Expected, detected_t&lt; Op, Args... &gt; &gt; &gt;</td></tr>

  150. <tr class="separator:ad5224ef66e8f40efaaf3ad3d605dd629"><td class="memSeparator" colspan="2">&#160;</td></tr>

  151. <tr class="memitem:afa24702fa15a1d0a8a05761c54b79def"><td class="memTemplParams" colspan="2">template&lt;typename To , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  152. <tr class="memitem:afa24702fa15a1d0a8a05761c54b79def"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#afa24702fa15a1d0a8a05761c54b79def">utl::meta::is_detected_convertible</a> = eval&lt; std::is_convertible&lt; detected_t&lt; Op, Args... &gt;, To &gt; &gt;</td></tr>

  153. <tr class="separator:afa24702fa15a1d0a8a05761c54b79def"><td class="memSeparator" colspan="2">&#160;</td></tr>

  154. <tr class="memitem:a4f3184ccb8e8ba2a78e2d2e83a0b9885"><td class="memTemplParams" colspan="2">template&lt;template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  155. <tr class="memitem:a4f3184ccb8e8ba2a78e2d2e83a0b9885"><td class="memTemplItemLeft" align="right" valign="top">constexpr bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a4f3184ccb8e8ba2a78e2d2e83a0b9885">utl::meta::is_detected_v</a> = is_detected&lt;Op, Args...&gt;::value</td></tr>

  156. <tr class="memdesc:a4f3184ccb8e8ba2a78e2d2e83a0b9885"><td class="mdescLeft">&#160;</td><td class="mdescRight">Detection predicate.  <a href="namespaceutl_1_1meta.html#a4f3184ccb8e8ba2a78e2d2e83a0b9885">More...</a><br /></td></tr>

  157. <tr class="separator:a4f3184ccb8e8ba2a78e2d2e83a0b9885"><td class="memSeparator" colspan="2">&#160;</td></tr>

  158. <tr class="memitem:a960827a1d72083a511f8ea4ccc8beceb"><td class="memTemplParams" colspan="2">template&lt;typename Expected , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  159. <tr class="memitem:a960827a1d72083a511f8ea4ccc8beceb"><td class="memTemplItemLeft" align="right" valign="top">constexpr bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a960827a1d72083a511f8ea4ccc8beceb">utl::meta::is_detected_exact_v</a> = is_detected_exact&lt; Expected, Op, Args...&gt;::value</td></tr>

  160. <tr class="memdesc:a960827a1d72083a511f8ea4ccc8beceb"><td class="mdescLeft">&#160;</td><td class="mdescRight">evaluates to true if evaluation of Op&lt;Args...&gt; is <code>Expected</code> and to false if not  <a href="namespaceutl_1_1meta.html#a960827a1d72083a511f8ea4ccc8beceb">More...</a><br /></td></tr>

  161. <tr class="separator:a960827a1d72083a511f8ea4ccc8beceb"><td class="memSeparator" colspan="2">&#160;</td></tr>

  162. <tr class="memitem:acba521b528e775be4b37d2e481e0f138"><td class="memTemplParams" colspan="2">template&lt;typename To , template&lt; typename... &gt; class Op, typename... Args&gt; </td></tr>

  163. <tr class="memitem:acba521b528e775be4b37d2e481e0f138"><td class="memTemplItemLeft" align="right" valign="top">constexpr bool&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#acba521b528e775be4b37d2e481e0f138">utl::meta::is_detected_convertible_v</a></td></tr>

  164. <tr class="separator:acba521b528e775be4b37d2e481e0f138"><td class="memSeparator" colspan="2">&#160;</td></tr>

  165. </table>

  166. <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>

  167. <div class="textblock"><p>Detection idiom based on WG21's N4502 [<a class="el" href="detection_8h.html#n4502">n4502</a> 1] from Walter E. Brown. </p>

  168. <p><a class="anchor" id="n4502"></a>[1]: www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4502.pdf</p>

  169. <p>Copyright (C) 2018-2019 Christos Choutouridis</p>

  170. <p>This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.</p>

  171. <p>This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.</p>

  172. <p>You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <a href="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</a>. </p>

  173. 

  174. <p class="definition">Definition in file <a class="el" href="detection_8h_source.html">detection.h</a>.</p>

  175. </div></div><!-- contents -->

  176. </div><!-- doc-content -->

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  178. <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->

  179.   <ul>

  180.     <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_82754f54d9380477ef02477185c1f103.html">utl</a></li><li class="navelem"><a class="el" href="dir_c6a55aeb35dd92d90cdd3b5869981960.html">meta</a></li><li class="navelem"><a class="el" href="detection_8h.html">detection.h</a></li>

  181.     <li class="footer">Generated by

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  183.     <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.14 </li>

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