Preview PR 1607: 4201f91 ← d4a7aac

Author: github-actions[bot]

gen/pull/1607/PREVIEW.md

@@ -1,8 +1,8 @@
 # PR [\#1607](https://github.com/cpprefjp/site/pull/1607) プレビュー
-- ⌚ 更新時刻: 2026-04-24 12:23:30 JST
+- ⌚ 更新時刻: 2026-04-24 12:29:27 JST
 - 🔍 [プレビュー (HTML)](https://cpprefjp.github.io/site/gen/pull/1607)
 - 📈 [プレビュー生成記録](https://github.com/cpprefjp/site/actions?query=event%3Apull_request_target+branch%3Acpp26_reflection)
-- **⫯** ソースの変更: [`c8f0f3f..8b40265`](https://github.com/cpprefjp/site/compare/c8f0f3f63e70b87bf9b9d66a9344525331eafa1f..8b40265a2b69c4733cb4796486fb7a165cf42378)
+- **⫯** ソースの変更: [`c8f0f3f..4201f91`](https://github.com/cpprefjp/site/compare/c8f0f3f63e70b87bf9b9d66a9344525331eafa1f..4201f91c0e96e7f35919301a767820f8610fefa8)
 
 ## 変更記事一覧 (258件)
 

gen/pull/1607/lang/cpp26/reflection.html

@@ -188,8 +188,8 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2026-04-24T03:16:35">
-        2026年04月24日 03時16分35秒
+      <span itemprop="datePublished" content="2026-04-24T03:25:00">
+        2026年04月24日 03時25分00秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -482,7 +482,9 @@ <h3>構文</h3>
 <span class="w">        </span><span class="n"><a href="../../reference/meta/access_context.html">std::meta::access_context</a></span><span class="o">::</span><span class="n"><a href="../../reference/meta/access_context/unchecked.html">unchecked</a></span><span class="p">())))</span><span class="w"> </span><span class="p">{</span>
 <span class="w">  </span><span class="k">constexpr</span><span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">annots</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n"><a href="../../reference/meta/annotations_of_with_type.html">std::meta::annotations_of_with_type</a></span><span class="p">(</span><span class="n">m</span><span class="p">,</span><span class="w"> </span><span class="o">^^</span><span class="n">Name</span><span class="p">);</span>
 <span class="w">  </span><span class="k">if</span><span class="w"> </span><span class="k">constexpr</span><span class="w"> </span><span class="p">(</span><span class="n">annots</span><span class="p">.</span><span class="n">size</span><span class="p">()</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mi">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
-<span class="w">    </span><span class="n"><a href="../../reference/print/println.html">std::println</a></span><span class="p">(</span><span class="s">"{}: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n">annots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">:</span><span class="p">].</span><span class="n">value</span><span class="p">,</span>
+<span class="w">    </span><span class="c1">// アノテーションは値のリフレクションではないため、</span>
+<span class="w">    </span><span class="c1">// constant_of()で値を取り出してからスプライスする</span>
+<span class="w">    </span><span class="n"><a href="../../reference/print/println.html">std::println</a></span><span class="p">(</span><span class="s">"{}: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n"><a href="../../reference/meta/constant_of.html">std::meta::constant_of</a></span><span class="p">(</span><span class="n">annots</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span><span class="o">:</span><span class="p">].</span><span class="n">value</span><span class="p">,</span>
 <span class="w">                           </span><span class="n">std</span><span class="o">::</span><span class="n">meta</span><span class="o">::</span><span class="n">identifier_of</span><span class="p">(</span><span class="n">m</span><span class="p">));</span>
 <span class="w">  </span><span class="p">}</span>
 <span class="p">}</span>

gen/pull/1607/reference/meta/annotations_of.html

@@ -68,7 +68,7 @@
 
     </head>
     <body>
-<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;meta&#34;], &#34;namespace&#34;: [&#34;std::meta&#34;], &#34;id-type&#34;: [&#34;function&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;14ff6e2f4f7ce7a2c0bd37399a619e05dc321ba0&#34;, &#34;source&#34;: &#34;#include &lt;meta&gt;\n#include &lt;print&gt;\n\nstruct Label { const char* text; };\n\nstruct [[=Label{std::define_static_string(\&#34;my struct\&#34;)}, =42]] S {};\n\nint main() {\n  constexpr auto annots = std::define_static_array(std::meta::annotations_of(^^S));\n  std::println(\&#34;\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u6570: {}\&#34;, annots.size());\n\n  template for (constexpr auto a : annots) {\n    // \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u578b\u540d\u3092\u51fa\u529b\n    std::println(\&#34;  \u578b: {}\&#34;, std::meta::display_string_of(std::meta::type_of(a)));\n\n    // \u578b\u3054\u3068\u306b\u5024\u3092\u53d6\u308a\u51fa\u3057\u3066\u51fa\u529b\n    if constexpr (std::meta::type_of(a) == ^^Label) {\n      std::println(\&#34;  \u5024: {}\&#34;, [:a:].text);\n    } else if constexpr (std::meta::type_of(a) == ^^int) {\n      std::println(\&#34;  \u5024: {}\&#34;, [:a:]);\n    }\n  }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;meta&#34;, &#34;annotations_of&#34;]}">
+<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;meta&#34;], &#34;namespace&#34;: [&#34;std::meta&#34;], &#34;id-type&#34;: [&#34;function&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;5ff53d27942544ca4f2e511b67a2b449a790f1d4&#34;, &#34;source&#34;: &#34;#include &lt;meta&gt;\n#include &lt;print&gt;\n\nstruct Label { const char* text; };\n\nstruct [[=Label{std::define_static_string(\&#34;my struct\&#34;)}, =42]] S {};\n\nint main() {\n  constexpr auto annots = std::define_static_array(std::meta::annotations_of(^^S));\n  std::println(\&#34;\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u6570: {}\&#34;, annots.size());\n\n  template for (constexpr auto a : annots) {\n    // \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u578b\u540d\u3092\u51fa\u529b\n    std::println(\&#34;  \u578b: {}\&#34;, std::meta::display_string_of(std::meta::type_of(a)));\n\n    // \u578b\u3054\u3068\u306b\u5024\u3092\u53d6\u308a\u51fa\u3057\u3066\u51fa\u529b\n    // \u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u306f\u5024\u306e\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3067\u306f\u306a\u3044\u305f\u3081\u3001\n    // constant_of()\u3067\u5024\u3092\u53d6\u308a\u51fa\u3057\u3066\u304b\u3089\u30b9\u30d7\u30e9\u30a4\u30b9\u3059\u308b\n    if constexpr (std::meta::type_of(a) == ^^Label) {\n      std::println(\&#34;  \u5024: {}\&#34;, [:std::meta::constant_of(a):].text);\n    } else if constexpr (std::meta::type_of(a) == ^^int) {\n      std::println(\&#34;  \u5024: {}\&#34;, [:std::meta::constant_of(a):]);\n    }\n  }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;meta&#34;, &#34;annotations_of&#34;]}">
   <nav class="navbar navbar-default" role="navigation">
     <div class="container-fluid">
       <div class="navbar-header">
@@ -188,8 +188,8 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2026-04-20T05:29:50">
-        2026年04月20日 05時29分50秒
+      <span itemprop="datePublished" content="2026-04-24T03:25:00">
+        2026年04月24日 03時25分00秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -223,7 +223,7 @@ <h2>概要</h2>
 <h2><a class="cpprefjp-defined-word" data-desc="関数呼び出し式の評価結果となるオブジェクト・値">戻り値</a></h2>
 <p><code>item</code>に付加されたすべてのアノテーションのリフレクションを格納した<code><a href="../vector/vector.html">std::vector</a></code>オブジェクトを返す。</p>
 <h2>例</h2>
-<p><div class="yata" id="14ff6e2f4f7ce7a2c0bd37399a619e05dc321ba0"><div class="codehilite"><pre><span></span><code><span class="cp">#include <a href="../meta.html">&lt;meta&gt;</a></span>
+<p><div class="yata" id="5ff53d27942544ca4f2e511b67a2b449a790f1d4"><div class="codehilite"><pre><span></span><code><span class="cp">#include <a href="../meta.html">&lt;meta&gt;</a></span>
 <span class="cp">#include <a href="../print.html">&lt;print&gt;</a></span>
 
 <span class="k">struct</span><span class="w"> </span><span class="nc">Label</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">text</span><span class="p">;</span><span class="w"> </span><span class="p">};</span>
@@ -239,10 +239,12 @@ <h2>例</h2>
 <span class="w">    </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"  型: {}"</span><span class="p">,</span><span class="w"> </span><span class="n"><a href="display_string_of.html">std::meta::display_string_of</a></span><span class="p">(</span><span class="n"><a href="type_of.html">std::meta::type_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)));</span>
 
 <span class="w">    </span><span class="c1">// 型ごとに値を取り出して出力</span>
+<span class="w">    </span><span class="c1">// アノテーションは値のリフレクションではないため、</span>
+<span class="w">    </span><span class="c1">// constant_of()で値を取り出してからスプライスする</span>
 <span class="w">    </span><span class="k">if</span><span class="w"> </span><span class="k">constexpr</span><span class="w"> </span><span class="p">(</span><span class="n"><a href="type_of.html">std::meta::type_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="o">^^</span><span class="n">Label</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
-<span class="w">      </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"  値: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n">a</span><span class="o">:</span><span class="p">].</span><span class="n">text</span><span class="p">);</span>
+<span class="w">      </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"  値: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n"><a href="constant_of.html">std::meta::constant_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)</span><span class="o">:</span><span class="p">].</span><span class="n">text</span><span class="p">);</span>
 <span class="w">    </span><span class="p">}</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="k">constexpr</span><span class="w"> </span><span class="p">(</span><span class="n"><a href="type_of.html">std::meta::type_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="o">^^</span><span class="kt">int</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
-<span class="w">      </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"  値: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n">a</span><span class="o">:</span><span class="p">]);</span>
+<span class="w">      </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"  値: {}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n"><a href="constant_of.html">std::meta::constant_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)</span><span class="o">:</span><span class="p">]);</span>
 <span class="w">    </span><span class="p">}</span>
 <span class="w">  </span><span class="p">}</span>
 <span class="p">}</span>

gen/pull/1607/reference/meta/annotations_of_with_type.html

@@ -68,7 +68,7 @@
 
     </head>
     <body>
-<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;meta&#34;], &#34;namespace&#34;: [&#34;std::meta&#34;], &#34;id-type&#34;: [&#34;function&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;60e56cb046f99c304d84087df8994e6bf2cd9f0e&#34;, &#34;source&#34;: &#34;#include &lt;meta&gt;\n#include &lt;print&gt;\n\nstruct Name { const char* value; };\n\nstruct [[=Name{std::define_static_string(\&#34;\u70b9\&#34;)}, =42]] Point {\n  [[=Name{std::define_static_string(\&#34;x\u5ea7\u6a19\&#34;)}]] int x;\n  [[=Name{std::define_static_string(\&#34;y\u5ea7\u6a19\&#34;)}]] int y;\n};\n\nint main() {\n  static_assert(std::meta::annotations_of_with_type(^^Point, ^^Name).size() == 1);\n  template for (constexpr auto a :\n      std::define_static_array(\n          std::meta::annotations_of_with_type(^^Point, ^^Name))) {\n    std::println(\&#34;{}\&#34;, [:a:].value);\n  }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;meta&#34;, &#34;annotations_of_with_type&#34;]}">
+<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;meta&#34;], &#34;namespace&#34;: [&#34;std::meta&#34;], &#34;id-type&#34;: [&#34;function&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;e064b87a9b03b984c75d10b206e3c55ba6669ef1&#34;, &#34;source&#34;: &#34;#include &lt;meta&gt;\n#include &lt;print&gt;\n\nstruct Name { const char* value; };\n\nstruct [[=Name{std::define_static_string(\&#34;\u70b9\&#34;)}, =42]] Point {\n  [[=Name{std::define_static_string(\&#34;x\u5ea7\u6a19\&#34;)}]] int x;\n  [[=Name{std::define_static_string(\&#34;y\u5ea7\u6a19\&#34;)}]] int y;\n};\n\nint main() {\n  static_assert(std::meta::annotations_of_with_type(^^Point, ^^Name).size() == 1);\n  template for (constexpr auto a :\n      std::define_static_array(\n          std::meta::annotations_of_with_type(^^Point, ^^Name))) {\n    // constant_of()\u3067\u5024\u306e\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u53d6\u308a\u51fa\u3057\u3066\u304b\u3089\u30b9\u30d7\u30e9\u30a4\u30b9\u3059\u308b\n    std::println(\&#34;{}\&#34;, [:std::meta::constant_of(a):].value);\n  }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;meta&#34;, &#34;annotations_of_with_type&#34;]}">
   <nav class="navbar navbar-default" role="navigation">
     <div class="container-fluid">
       <div class="navbar-header">
@@ -188,8 +188,8 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2026-04-20T05:29:50">
-        2026年04月20日 05時29分50秒
+      <span itemprop="datePublished" content="2026-04-24T03:25:00">
+        2026年04月24日 03時25分00秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -223,7 +223,7 @@ <h2>概要</h2>
 <h2><a class="cpprefjp-defined-word" data-desc="関数呼び出し式の評価結果となるオブジェクト・値">戻り値</a></h2>
 <p><code>item</code>に付加されたアノテーションのうち、型が<code>type</code>に一致するもののリフレクションを格納した<code><a href="../vector/vector.html">std::vector</a></code>オブジェクトを返す。</p>
 <h2>例</h2>
-<p><div class="yata" id="60e56cb046f99c304d84087df8994e6bf2cd9f0e"><div class="codehilite"><pre><span></span><code><span class="cp">#include <a href="../meta.html">&lt;meta&gt;</a></span>
+<p><div class="yata" id="e064b87a9b03b984c75d10b206e3c55ba6669ef1"><div class="codehilite"><pre><span></span><code><span class="cp">#include <a href="../meta.html">&lt;meta&gt;</a></span>
 <span class="cp">#include <a href="../print.html">&lt;print&gt;</a></span>
 
 <span class="k">struct</span><span class="w"> </span><span class="nc">Name</span><span class="w"> </span><span class="p">{</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="o">*</span><span class="w"> </span><span class="n">value</span><span class="p">;</span><span class="w"> </span><span class="p">};</span>
@@ -238,7 +238,8 @@ <h2>例</h2>
 <span class="w">  </span><span class="k">template</span><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="k">constexpr</span><span class="w"> </span><span class="k">auto</span><span class="w"> </span><span class="n">a</span><span class="w"> </span><span class="o">:</span>
 <span class="w">      </span><span class="n"><a href="define_static_array.html">std::define_static_array</a></span><span class="p">(</span>
 <span class="w">          </span><span class="n">std</span><span class="o">::</span><span class="n">meta</span><span class="o">::</span><span class="n">annotations_of_with_type</span><span class="p">(</span><span class="o">^^</span><span class="n">Point</span><span class="p">,</span><span class="w"> </span><span class="o">^^</span><span class="n">Name</span><span class="p">)))</span><span class="w"> </span><span class="p">{</span>
-<span class="w">    </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"{}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n">a</span><span class="o">:</span><span class="p">].</span><span class="n">value</span><span class="p">);</span>
+<span class="w">    </span><span class="c1">// constant_of()で値のリフレクションを取り出してからスプライスする</span>
+<span class="w">    </span><span class="n"><a href="../print/println.html">std::println</a></span><span class="p">(</span><span class="s">"{}"</span><span class="p">,</span><span class="w"> </span><span class="p">[</span><span class="o">:</span><span class="n"><a href="constant_of.html">std::meta::constant_of</a></span><span class="p">(</span><span class="n">a</span><span class="p">)</span><span class="o">:</span><span class="p">].</span><span class="n">value</span><span class="p">);</span>
 <span class="w">  </span><span class="p">}</span>
 <span class="p">}</span>
 </code></pre></div>