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<div class="header">
  <div class="summary">
<a href="#namespaces">Namespaces</a> &#124;
<a href="#typedef-members">Typedefs</a>  </div>
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<div class="title">useif.h File Reference</div>  </div>
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<p>Template meta-programming SFINAE helpers.  
<a href="#details">More...</a></p>
<div class="textblock"><code>#include &lt;<a class="el" href="impl_8h_source.html">utl/core/impl.h</a>&gt;</code><br />
<code>#include &lt;<a class="el" href="operations_8h_source.html">utl/meta/operations.h</a>&gt;</code><br />
<code>#include &lt;<a class="el" href="sfinae_8h_source.html">utl/meta/sfinae.h</a>&gt;</code><br />
</div>
<p><a href="useif_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="namespaces"></a>
Namespaces</h2></td></tr>
<tr class="memitem:namespaceutl"><td class="memItemLeft" align="right" valign="top"> &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceutl.html">utl</a></td></tr>
<tr class="memdesc:namespaceutl"><td class="mdescLeft">&#160;</td><td class="mdescRight">STL's core language concepts. <br /></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:namespaceutl_1_1meta"><td class="memItemLeft" align="right" valign="top"> &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html">utl::meta</a></td></tr>
<tr class="separator:"><td class="memSeparator" colspan="2">&#160;</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:a7b4ba22b3afb3e7a98e1012a350cb573"><td class="memTemplParams" colspan="2">template&lt;typename _T1 , typename _T2 , typename _Ret  = _T1&gt; </td></tr>
<tr class="memitem:a7b4ba22b3afb3e7a98e1012a350cb573"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a7b4ba22b3afb3e7a98e1012a350cb573">utl::meta::use_if_same_t</a> = enable_if_t&lt; same_&lt; _T1, _T2 &gt;::value, _Ret &gt;</td></tr>
<tr class="memdesc:a7b4ba22b3afb3e7a98e1012a350cb573"><td class="mdescLeft">&#160;</td><td class="mdescRight">If same type resolves to _Ret, else SFINAE.  <a href="namespaceutl_1_1meta.html#a7b4ba22b3afb3e7a98e1012a350cb573">More...</a><br /></td></tr>
<tr class="separator:a7b4ba22b3afb3e7a98e1012a350cb573"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af590469269a8c378d937d8d75ee96e8c"><td class="memTemplParams" colspan="2">template&lt;typename _T1 , typename _T2 , typename _Ret  = _T1&gt; </td></tr>
<tr class="memitem:af590469269a8c378d937d8d75ee96e8c"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#af590469269a8c378d937d8d75ee96e8c">utl::meta::use_if_not_same_t</a> = enable_if_t&lt; !same_&lt; _T1, _T2 &gt;::value, _Ret &gt;</td></tr>
<tr class="memdesc:af590469269a8c378d937d8d75ee96e8c"><td class="mdescLeft">&#160;</td><td class="mdescRight">If not same type resolves to _Ret, else SFINAE.  <a href="namespaceutl_1_1meta.html#af590469269a8c378d937d8d75ee96e8c">More...</a><br /></td></tr>
<tr class="separator:af590469269a8c378d937d8d75ee96e8c"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad0394846551cd881782e46d2d05190de"><td class="memTemplParams" colspan="2">template&lt;typename T1 , typename... Ts&gt; </td></tr>
<tr class="memitem:ad0394846551cd881782e46d2d05190de"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#ad0394846551cd881782e46d2d05190de">utl::meta::use_if_any_t</a> = enable_if_t&lt; or_&lt; T1, Ts... &gt;::value, T1 &gt;</td></tr>
<tr class="memdesc:ad0394846551cd881782e46d2d05190de"><td class="mdescLeft">&#160;</td><td class="mdescRight">If any type (_T1 or _T2) type resolves to _Ret, else to SFINAE.  <a href="namespaceutl_1_1meta.html#ad0394846551cd881782e46d2d05190de">More...</a><br /></td></tr>
<tr class="separator:ad0394846551cd881782e46d2d05190de"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52ff6257bf079904f9cb51a65f5a7397"><td class="memTemplParams" colspan="2">template&lt;typename T1 , typename... Ts&gt; </td></tr>
<tr class="memitem:a52ff6257bf079904f9cb51a65f5a7397"><td class="memTemplItemLeft" align="right" valign="top">using&#160;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="namespaceutl_1_1meta.html#a52ff6257bf079904f9cb51a65f5a7397">utl::meta::use_if_all_t</a> = enable_if_t&lt; and_&lt; T1, Ts... &gt;::value, T1 &gt;</td></tr>
<tr class="memdesc:a52ff6257bf079904f9cb51a65f5a7397"><td class="mdescLeft">&#160;</td><td class="mdescRight">If both type (_T1 and _T2) type resolves to _Ret, else to SFINAE.  <a href="namespaceutl_1_1meta.html#a52ff6257bf079904f9cb51a65f5a7397">More...</a><br /></td></tr>
<tr class="separator:a52ff6257bf079904f9cb51a65f5a7397"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Template meta-programming SFINAE helpers. </p>
<p>Copyright (C) 2018 Christos Choutouridis</p>
<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>
<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>
<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>

<p class="definition">Definition in file <a class="el" href="useif_8h_source.html">useif.h</a>.</p>
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