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<p>Trait invocation/composition.
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Modules</h2></td></tr>
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<tr class="memitem:group__invocation"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__invocation.html">Invocation</a></td></tr>
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<tr class="memdesc:group__invocation"><td class="mdescLeft"> </td><td class="mdescRight">Trait invocation. <br /></td></tr>
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<tr class="separator:"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:group__composition"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__composition.html">Composition</a></td></tr>
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<tr class="memdesc:group__composition"><td class="mdescLeft"> </td><td class="mdescRight">Trait composition. <br /></td></tr>
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<tr class="memitem:group__lazy__trait"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lazy__trait.html">lazy</a></td></tr>
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</table><table class="memberdecls">
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Classes</h2></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structmeta_1_1id.html">meta::id< T ></a></td></tr>
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<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">A trait that always returns its argument <code>T</code>. It is also an invocable that always returns <code>T</code>. <a href="structmeta_1_1id.html#details">More...</a><br /></td></tr>
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</table><table class="memberdecls">
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Typedefs</h2></td></tr>
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<tr class="memitem:gaf366475425d8cc039017a378caceeb89"><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
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<tr class="memitem:gaf366475425d8cc039017a378caceeb89"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__trait.html#gaf366475425d8cc039017a378caceeb89">meta::alignof_</a> = <a class="el" href="group__integral.html#ga92ba0e8ad97a32c34cec51aa6d4f8679">meta::size_t</a>< alignof(T)></td></tr>
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<tr class="memdesc:gaf366475425d8cc039017a378caceeb89"><td class="mdescLeft"> </td><td class="mdescRight">An alias that computes the alignment required for any instance of the type <code>T</code>. <a href="group__trait.html#gaf366475425d8cc039017a378caceeb89">More...</a><br /></td></tr>
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<tr class="separator:gaf366475425d8cc039017a378caceeb89"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gadfb965e2b47e00d52a75819dc6ef783d"><td class="memTemplParams" colspan="2"><a id="gadfb965e2b47e00d52a75819dc6ef783d" name="gadfb965e2b47e00d52a75819dc6ef783d"></a>
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template<typename T > </td></tr>
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<tr class="memitem:gadfb965e2b47e00d52a75819dc6ef783d"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><b>meta::id_t</b> = <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a>< <a class="el" href="structmeta_1_1id.html">id</a>< T > ></td></tr>
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<tr class="memdesc:gadfb965e2b47e00d52a75819dc6ef783d"><td class="mdescLeft"> </td><td class="mdescRight">An alias for type <code>T</code>. Useful in non-deduced contexts. <br /></td></tr>
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<tr class="separator:gadfb965e2b47e00d52a75819dc6ef783d"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga5984b470adf01d45dc9dc3bdbd082210"><td class="memTemplParams" colspan="2">template<typename T , template< typename... > class C> </td></tr>
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<tr class="memitem:ga5984b470adf01d45dc9dc3bdbd082210"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__trait.html#ga5984b470adf01d45dc9dc3bdbd082210">meta::is</a> = <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a>< detail::is_< T, C > ></td></tr>
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<tr class="memdesc:ga5984b470adf01d45dc9dc3bdbd082210"><td class="mdescLeft"> </td><td class="mdescRight">is <a href="group__trait.html#ga5984b470adf01d45dc9dc3bdbd082210">More...</a><br /></td></tr>
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<tr class="separator:ga5984b470adf01d45dc9dc3bdbd082210"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga4b40c77b363544448bfb6d8bbaa37425"><td class="memTemplParams" colspan="2"><a id="ga4b40c77b363544448bfb6d8bbaa37425" name="ga4b40c77b363544448bfb6d8bbaa37425"></a>
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template<typename T > </td></tr>
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<tr class="memitem:ga4b40c77b363544448bfb6d8bbaa37425"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><b>meta::is_callable</b> = <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a>< detail::is_callable_< T > ></td></tr>
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<tr class="memdesc:ga4b40c77b363544448bfb6d8bbaa37425"><td class="mdescLeft"> </td><td class="mdescRight">An alias for <code>std::true_type</code> if <code>T::invoke</code> exists and names a class template or alias template; otherwise, it's an alias for <code>std::false_type</code>. <br /></td></tr>
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<tr class="memitem:ga25e4339bc310103f33650978a26ee552"><td class="memTemplParams" colspan="2"><a id="ga25e4339bc310103f33650978a26ee552" name="ga25e4339bc310103f33650978a26ee552"></a>
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template<typename T > </td></tr>
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<tr class="memitem:ga25e4339bc310103f33650978a26ee552"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><b>meta::is_valid</b> = detail::is_valid_< T ></td></tr>
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<tr class="memdesc:ga25e4339bc310103f33650978a26ee552"><td class="mdescLeft"> </td><td class="mdescRight">For testing whether a deferred computation will succeed in a <code>let</code> or a <code>lambda</code>. <br /></td></tr>
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<tr class="separator:ga25e4339bc310103f33650978a26ee552"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad34f270fe54eeffd113b91f56af6cd6f"><td class="memTemplParams" colspan="2">template<typename... Ts> </td></tr>
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<tr class="memitem:gad34f270fe54eeffd113b91f56af6cd6f"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__trait.html#gad34f270fe54eeffd113b91f56af6cd6f">meta::lambda</a> = detail::lambda_< <a class="el" href="structmeta_1_1list.html">list</a>< Ts... > ></td></tr>
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<tr class="memdesc:gad34f270fe54eeffd113b91f56af6cd6f"><td class="mdescLeft"> </td><td class="mdescRight">For creating anonymous Invocables. <a href="group__trait.html#gad34f270fe54eeffd113b91f56af6cd6f">More...</a><br /></td></tr>
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<tr class="separator:gad34f270fe54eeffd113b91f56af6cd6f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga8135043cacd3026f062390fc4842d21f"><td class="memTemplParams" colspan="2">template<typename... As> </td></tr>
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<tr class="memitem:ga8135043cacd3026f062390fc4842d21f"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__trait.html#ga8135043cacd3026f062390fc4842d21f">meta::let</a> = <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a>< <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a>< detail::let_< As... > > ></td></tr>
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<tr class="memdesc:ga8135043cacd3026f062390fc4842d21f"><td class="mdescLeft"> </td><td class="mdescRight">A lexically scoped expression with local variables. <a href="group__trait.html#ga8135043cacd3026f062390fc4842d21f">More...</a><br /></td></tr>
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<tr class="separator:ga8135043cacd3026f062390fc4842d21f"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gad54adef1c420be333e5027f7c63dc5db"><td class="memTemplParams" colspan="2"><a id="gad54adef1c420be333e5027f7c63dc5db" name="gad54adef1c420be333e5027f7c63dc5db"></a>
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template<invocable Fn> </td></tr>
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<tr class="memitem:gad54adef1c420be333e5027f7c63dc5db"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><b>meta::not_fn</b> = <a class="el" href="structmeta_1_1compose__.html">compose</a>< <a class="el" href="structmeta_1_1quote.html">quote</a>< <a class="el" href="group__logical.html#ga72884249179b0b22a27cc0709b75f23b">not_</a> >, Fn ></td></tr>
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<tr class="memdesc:gad54adef1c420be333e5027f7c63dc5db"><td class="mdescLeft"> </td><td class="mdescRight">Logically negate the result of invocable <code>Fn</code>. <br /></td></tr>
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<tr class="memitem:gac14214187fc011fb2c0f719a034bb730"><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
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<tr class="memitem:gac14214187fc011fb2c0f719a034bb730"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="group__trait.html#gac14214187fc011fb2c0f719a034bb730">meta::sizeof_</a> = <a class="el" href="group__integral.html#ga92ba0e8ad97a32c34cec51aa6d4f8679">meta::size_t</a>< sizeof(T)></td></tr>
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<tr class="memdesc:gac14214187fc011fb2c0f719a034bb730"><td class="mdescLeft"> </td><td class="mdescRight">An alias that computes the size of the type <code>T</code>. <a href="group__trait.html#gac14214187fc011fb2c0f719a034bb730">More...</a><br /></td></tr>
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<tr class="separator:gac14214187fc011fb2c0f719a034bb730"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaea4e08158f9e882faf65f8f73b85d1c3"><td class="memTemplParams" colspan="2"><a id="gaea4e08158f9e882faf65f8f73b85d1c3" name="gaea4e08158f9e882faf65f8f73b85d1c3"></a>
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template<typename... > </td></tr>
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<tr class="memitem:gaea4e08158f9e882faf65f8f73b85d1c3"><td class="memTemplItemLeft" align="right" valign="top">using </td><td class="memTemplItemRight" valign="bottom"><b>meta::void_</b> = void</td></tr>
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<tr class="memdesc:gaea4e08158f9e882faf65f8f73b85d1c3"><td class="mdescLeft"> </td><td class="mdescRight">An alias for <code>void</code>. <br /></td></tr>
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<tr class="separator:gaea4e08158f9e882faf65f8f73b85d1c3"><td class="memSeparator" colspan="2"> </td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="var-members" name="var-members"></a>
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Variables</h2></td></tr>
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<tr class="memitem:gad44e618cd853bf9c253add6b93234302"><td class="memTemplParams" colspan="2"><a id="gad44e618cd853bf9c253add6b93234302" name="gad44e618cd853bf9c253add6b93234302"></a>
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template<typename , template< typename... > class> </td></tr>
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<tr class="memitem:gad44e618cd853bf9c253add6b93234302"><td class="memTemplItemLeft" align="right" valign="top">constexpr bool </td><td class="memTemplItemRight" valign="bottom"><b>meta::is_v</b> = false</td></tr>
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<tr class="memdesc:gad44e618cd853bf9c253add6b93234302"><td class="mdescLeft"> </td><td class="mdescRight">is_v Test whether a type <code>T</code> is an instantiation of class template <code>C</code>. <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
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<p >Trait invocation/composition. </p>
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<h2 class="groupheader">Typedef Documentation</h2>
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<a id="gaf366475425d8cc039017a378caceeb89" name="gaf366475425d8cc039017a378caceeb89"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf366475425d8cc039017a378caceeb89">◆ </a></span>alignof_</h2>
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template<typename T > </div>
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<td class="memname">using <a class="el" href="group__trait.html#gaf366475425d8cc039017a378caceeb89">meta::alignof_</a> = typedef <a class="el" href="group__integral.html#ga92ba0e8ad97a32c34cec51aa6d4f8679">meta::size_t</a><alignof(T)></td>
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<p><code>#include <<a class="el" href="meta_8hpp.html">meta/meta.hpp</a>></code></p>
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<p>An alias that computes the alignment required for any instance of the type <code>T</code>. </p>
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<dl class="section user"><dt>Complexity</dt><dd><code>O(1)</code>. </dd></dl>
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<a id="ga5984b470adf01d45dc9dc3bdbd082210" name="ga5984b470adf01d45dc9dc3bdbd082210"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5984b470adf01d45dc9dc3bdbd082210">◆ </a></span>is</h2>
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template<typename T , template< typename... > class C> </div>
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<td class="memname">using <a class="el" href="group__trait.html#ga5984b470adf01d45dc9dc3bdbd082210">meta::is</a> = typedef <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a><detail::is_<T, C> ></td>
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<p><code>#include <<a class="el" href="meta_8hpp.html">meta/meta.hpp</a>></code></p>
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<p>is </p>
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<p >Test whether a type <code>T</code> is an instantiation of class template <code>C</code>. </p>
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<a id="gad34f270fe54eeffd113b91f56af6cd6f" name="gad34f270fe54eeffd113b91f56af6cd6f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gad34f270fe54eeffd113b91f56af6cd6f">◆ </a></span>lambda</h2>
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template<typename... Ts> </div>
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<td class="memname">using <a class="el" href="group__trait.html#gad34f270fe54eeffd113b91f56af6cd6f">meta::lambda</a> = typedef detail::lambda_<<a class="el" href="structmeta_1_1list.html">list</a><Ts...> ></td>
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<p><code>#include <<a class="el" href="meta_8hpp.html">meta/meta.hpp</a>></code></p>
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<p>For creating anonymous Invocables. </p>
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<div class="fragment"><div class="line"><span class="keyword">using </span>L = <a class="code hl_typedef" href="group__trait.html#gad34f270fe54eeffd113b91f56af6cd6f">lambda<_a, _b, std::pair<_b, std::pair<_a, _a></a>>>;</div>
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<div class="line"><span class="keyword">using </span>P = <a class="code hl_typedef" href="group__invocation.html#gac5c75197d5412d032f662b81e1a37e22">invoke<L, int, short></a>;</div>
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<div class="line"><span class="keyword">static_assert</span>(std::is_same_v<P, std::pair<short, std::pair<int, int>>>, <span class="stringliteral">""</span>);</div>
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<div class="ttc" id="agroup__invocation_html_gac5c75197d5412d032f662b81e1a37e22"><div class="ttname"><a href="group__invocation.html#gac5c75197d5412d032f662b81e1a37e22">meta::invoke</a></div><div class="ttdeci">typename Fn::template invoke< Args... > invoke</div><div class="ttdoc">Evaluate the invocable Fn with the arguments Args.</div><div class="ttdef"><b>Definition:</b> meta.hpp:541</div></div>
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<div class="ttc" id="agroup__trait_html_gad34f270fe54eeffd113b91f56af6cd6f"><div class="ttname"><a href="group__trait.html#gad34f270fe54eeffd113b91f56af6cd6f">meta::lambda</a></div><div class="ttdeci">detail::lambda_< list< Ts... > > lambda</div><div class="ttdoc">For creating anonymous Invocables.</div><div class="ttdef"><b>Definition:</b> meta.hpp:3592</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8135043cacd3026f062390fc4842d21f">◆ </a></span>let</h2>
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template<typename... As> </div>
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<td class="memname">using <a class="el" href="group__trait.html#ga8135043cacd3026f062390fc4842d21f">meta::let</a> = typedef <a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a><<a class="el" href="group__invocation.html#ga08e2193149605769f6052795ff0a87b1">_t</a><detail::let_<As...> >></td>
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<p><code>#include <<a class="el" href="meta_8hpp.html">meta/meta.hpp</a>></code></p>
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<p>A lexically scoped expression with local variables. </p>
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<div class="fragment"><div class="line"><span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span> L></div>
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<div class="line"><span class="keyword">using </span>find_index_ = <a class="code hl_typedef" href="group__trait.html#ga8135043cacd3026f062390fc4842d21f">let</a><</div>
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<div class="line"> <a class="code hl_struct" href="structmeta_1_1var.html">var<_a, L></a>,</div>
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<div class="line"> <a class="code hl_struct" href="structmeta_1_1var.html">var<_b, lazy::find<_a, T></a>>,</div>
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<div class="line"> <a class="code hl_struct" href="structmeta_1_1defer.html">lazy::if_</a><</div>
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<div class="line"> std::is_same<_b, list<>>,</div>
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<div class="line"> <a class="code hl_typedef" href="group__list.html#gac6b96d77cd4223043591fe6e5819ecf8">meta::npos</a>,</div>
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<div class="line"> <a class="code hl_struct" href="structmeta_1_1defer.html">lazy::minus<lazy::size<_a></a>, <a class="code hl_struct" href="structmeta_1_1defer.html">lazy::size<_b></a>>>>;</div>
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<div class="line"><span class="keyword">static_assert</span>(find_index_<int, list<short, int, float>>{} == 1, <span class="stringliteral">""</span>);</div>
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<div class="line"><span class="keyword">static_assert</span>(find_index_<double, list<short, int, float>>{} == <a class="code hl_typedef" href="group__list.html#gac6b96d77cd4223043591fe6e5819ecf8">meta::npos</a>{}, <span class="stringliteral">""</span>);</div>
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<div class="ttc" id="agroup__list_html_gac6b96d77cd4223043591fe6e5819ecf8"><div class="ttname"><a href="group__list.html#gac6b96d77cd4223043591fe6e5819ecf8">meta::npos</a></div><div class="ttdeci">meta::size_t< std::size_t(-1)> npos</div><div class="ttdoc">A special value used to indicate no matches. It equals the maximum value representable by std::size_t...</div><div class="ttdef"><b>Definition:</b> meta.hpp:1676</div></div>
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<div class="ttc" id="agroup__trait_html_ga8135043cacd3026f062390fc4842d21f"><div class="ttname"><a href="group__trait.html#ga8135043cacd3026f062390fc4842d21f">meta::let</a></div><div class="ttdeci">_t< _t< detail::let_< As... > > > let</div><div class="ttdoc">A lexically scoped expression with local variables.</div><div class="ttdef"><b>Definition:</b> meta.hpp:3660</div></div>
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<div class="ttc" id="astructmeta_1_1defer_html"><div class="ttname"><a href="structmeta_1_1defer.html">meta::defer</a></div><div class="ttdoc">A wrapper that defers the instantiation of a template C with type parameters Ts in a lambda or let ex...</div><div class="ttdef"><b>Definition:</b> meta.hpp:787</div></div>
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<div class="ttc" id="astructmeta_1_1var_html"><div class="ttname"><a href="structmeta_1_1var.html">meta::var</a></div><div class="ttdoc">For use when defining local variables in meta::let expressions.</div><div class="ttdef"><b>Definition:</b> meta.hpp:3622</div></div>
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<h2 class="memtitle"><span class="permalink"><a href="#gac14214187fc011fb2c0f719a034bb730">◆ </a></span>sizeof_</h2>
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template<typename T > </div>
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<td class="memname">using <a class="el" href="group__trait.html#gac14214187fc011fb2c0f719a034bb730">meta::sizeof_</a> = typedef <a class="el" href="group__integral.html#ga92ba0e8ad97a32c34cec51aa6d4f8679">meta::size_t</a><sizeof(T)></td>
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<p><code>#include <<a class="el" href="meta_8hpp.html">meta/meta.hpp</a>></code></p>
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<p>An alias that computes the size of the type <code>T</code>. </p>
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<dl class="section user"><dt>Complexity</dt><dd><code>O(1)</code>. </dd></dl>
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