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<a href="useif_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#ifndef __utl_meta_useif_h__</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#define __utl_meta_useif_h__</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="impl_8h.html">utl/core/impl.h</a>&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="operations_8h.html">utl/meta/operations.h</a>&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="sfinae_8h.html">utl/meta/sfinae.h</a>&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceutl.html">utl</a> {</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span>meta {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _T1, <span class="keyword">typename</span> _T2, <span class="keyword">typename</span> _Ret =_T1&gt;</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;   <span class="keyword">using</span> <a class="code" href="namespaceutl_1_1meta.html#a7b4ba22b3afb3e7a98e1012a350cb573">use_if_same_t</a> = <a class="code" href="namespaceutl_1_1meta.html#a372fe391d9567f66a81091f581e1fa01">enable_if_t</a>&lt;</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;      same_&lt;_T1, _T2&gt;::value, _Ret</div><div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="namespaceutl_1_1meta.html#a7b4ba22b3afb3e7a98e1012a350cb573">   40</a></span>&#160;   &gt;;</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _T1, <span class="keyword">typename</span> _T2, <span class="keyword">typename</span> _Ret =_T1&gt;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;   <span class="keyword">using</span> <a class="code" href="namespaceutl_1_1meta.html#af590469269a8c378d937d8d75ee96e8c">use_if_not_same_t</a> = <a class="code" href="namespaceutl_1_1meta.html#a372fe391d9567f66a81091f581e1fa01">enable_if_t</a>&lt;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;      !<a class="code" href="structutl_1_1meta_1_1same__.html">same_&lt;_T1, _T2&gt;::value</a>, _Ret</div><div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="namespaceutl_1_1meta.html#af590469269a8c378d937d8d75ee96e8c">   45</a></span>&#160;   &gt;;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span>... Ts&gt;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;   <span class="keyword">using</span> <a class="code" href="namespaceutl_1_1meta.html#ad0394846551cd881782e46d2d05190de">use_if_any_t</a> = <a class="code" href="namespaceutl_1_1meta.html#a372fe391d9567f66a81091f581e1fa01">enable_if_t</a>&lt;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;      <a class="code" href="group__integral.html#gac43f400cc93d54f5f79892e618069d9b">or_</a>&lt;T1, Ts...&gt;::value, T1</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="namespaceutl_1_1meta.html#ad0394846551cd881782e46d2d05190de">   50</a></span>&#160;   &gt;;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;   <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T1, <span class="keyword">typename</span>... Ts&gt;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;   <span class="keyword">using</span> <a class="code" href="namespaceutl_1_1meta.html#a52ff6257bf079904f9cb51a65f5a7397">use_if_all_t</a> = <a class="code" href="namespaceutl_1_1meta.html#a372fe391d9567f66a81091f581e1fa01">enable_if_t</a>&lt;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;      <a class="code" href="group__integral.html#ga8e82f4758321e0e0b3705607f7d8e068">and_</a>&lt;T1, Ts...&gt;::value, T1</div><div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="namespaceutl_1_1meta.html#a52ff6257bf079904f9cb51a65f5a7397">   56</a></span>&#160;   &gt;;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;}}</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* __utl_meta_useif_h__ */</span><span class="preprocessor"></span></div><div class="ttc" id="namespaceutl_1_1meta_html_a7b4ba22b3afb3e7a98e1012a350cb573"><div class="ttname"><a href="namespaceutl_1_1meta.html#a7b4ba22b3afb3e7a98e1012a350cb573">utl::meta::use_if_same_t</a></div><div class="ttdeci">enable_if_t&lt; same_&lt; _T1, _T2 &gt;::value, _Ret &gt; use_if_same_t</div><div class="ttdoc">If same type resolves to _Ret, else SFINAE. </div><div class="ttdef"><b>Definition:</b> <a href="useif_8h_source.html#l00040">useif.h:40</a></div></div>
<div class="ttc" id="namespaceutl_1_1meta_html_af590469269a8c378d937d8d75ee96e8c"><div class="ttname"><a href="namespaceutl_1_1meta.html#af590469269a8c378d937d8d75ee96e8c">utl::meta::use_if_not_same_t</a></div><div class="ttdeci">enable_if_t&lt; !same_&lt; _T1, _T2 &gt;::value, _Ret &gt; use_if_not_same_t</div><div class="ttdoc">If not same type resolves to _Ret, else SFINAE. </div><div class="ttdef"><b>Definition:</b> <a href="useif_8h_source.html#l00045">useif.h:45</a></div></div>
<div class="ttc" id="operations_8h_html"><div class="ttname"><a href="operations_8h.html">operations.h</a></div><div class="ttdoc">Integral constant operations and logical operations. </div></div>
<div class="ttc" id="namespaceutl_1_1meta_html_a52ff6257bf079904f9cb51a65f5a7397"><div class="ttname"><a href="namespaceutl_1_1meta.html#a52ff6257bf079904f9cb51a65f5a7397">utl::meta::use_if_all_t</a></div><div class="ttdeci">enable_if_t&lt; and_&lt; T1, Ts... &gt;::value, T1 &gt; use_if_all_t</div><div class="ttdoc">If both type (_T1 and _T2) type resolves to _Ret, else to SFINAE. </div><div class="ttdef"><b>Definition:</b> <a href="useif_8h_source.html#l00056">useif.h:56</a></div></div>
<div class="ttc" id="namespaceutl_html"><div class="ttname"><a href="namespaceutl.html">utl</a></div><div class="ttdoc">STL&amp;#39;s core language concepts. </div><div class="ttdef"><b>Definition:</b> <a href="__1wire_8h_source.html#l00030">_1wire.h:30</a></div></div>
<div class="ttc" id="structutl_1_1meta_1_1same___html"><div class="ttname"><a href="structutl_1_1meta_1_1same__.html">utl::meta::same_</a></div><div class="ttdef"><b>Definition:</b> <a href="operations_8h_source.html#l00102">operations.h:102</a></div></div>
<div class="ttc" id="sfinae_8h_html"><div class="ttname"><a href="sfinae_8h.html">sfinae.h</a></div><div class="ttdoc">Template meta-programming SFINAE helpers. </div></div>
<div class="ttc" id="namespaceutl_1_1meta_html_a372fe391d9567f66a81091f581e1fa01"><div class="ttname"><a href="namespaceutl_1_1meta.html#a372fe391d9567f66a81091f581e1fa01">utl::meta::enable_if_t</a></div><div class="ttdeci">eval&lt; enable_if&lt; If, _Tp &gt; &gt; enable_if_t</div><div class="ttdoc">alias template for enable_if </div><div class="ttdef"><b>Definition:</b> <a href="sfinae_8h_source.html#l00063">sfinae.h:63</a></div></div>
<div class="ttc" id="group__integral_html_gac43f400cc93d54f5f79892e618069d9b"><div class="ttname"><a href="group__integral.html#gac43f400cc93d54f5f79892e618069d9b">utl::meta::or_</a></div><div class="ttdeci">eval&lt; detail::_or_&lt; _Ts... &gt; &gt; or_</div><div class="ttdef"><b>Definition:</b> <a href="operations_8h_source.html#l00070">operations.h:70</a></div></div>
<div class="ttc" id="group__integral_html_ga8e82f4758321e0e0b3705607f7d8e068"><div class="ttname"><a href="group__integral.html#ga8e82f4758321e0e0b3705607f7d8e068">utl::meta::and_</a></div><div class="ttdeci">eval&lt; detail::_and_&lt; _Ts... &gt; &gt; and_</div><div class="ttdef"><b>Definition:</b> <a href="operations_8h_source.html#l00096">operations.h:96</a></div></div>
<div class="ttc" id="namespaceutl_1_1meta_html_ad0394846551cd881782e46d2d05190de"><div class="ttname"><a href="namespaceutl_1_1meta.html#ad0394846551cd881782e46d2d05190de">utl::meta::use_if_any_t</a></div><div class="ttdeci">enable_if_t&lt; or_&lt; T1, Ts... &gt;::value, T1 &gt; use_if_any_t</div><div class="ttdoc">If any type (_T1 or _T2) type resolves to _Ret, else to SFINAE. </div><div class="ttdef"><b>Definition:</b> <a href="useif_8h_source.html#l00050">useif.h:50</a></div></div>
<div class="ttc" id="impl_8h_html"><div class="ttname"><a href="impl_8h.html">impl.h</a></div><div class="ttdoc">Implementation detail main forward header. </div></div>
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