update automatically

Author: cpprefjp-autoupdate

lang/cpp26.html

@@ -176,8 +176,8 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2026-01-14T06:25:38">
-        2026年01月14日 06時25分38秒
+      <span itemprop="datePublished" content="2026-01-20T02:35:12">
+        2026年01月20日 02時35分12秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -693,7 +693,7 @@ <h3>文字列</h3>
 <li><code>constexpr</code>に対応</li>
 </ul>
 </li>
-<li><code><a href="../reference/string/to_string.html">std::to_string()</a></code>と<code><a href="../reference/string/to_wstring.html">std::to_wstring()</a></code>を<code>constexpr</code>に対応</li>
+<li><code><a href="../reference/string/to_string.html">std::to_string()</a></code>と<code><a href="../reference/string/to_wstring.html">std::to_wstring()</a></code>の整数<a class="cpprefjp-defined-word" data-desc="同名の関数を異なる引数・テンプレート・制約などで複数定義すること。または同名の関数の集合">オーバーロード</a>が<code>constexpr</code>に対応</li>
 <li><code><a href="../reference/string/basic_string.html">std::basic_string</a></code>クラスと<code><a href="../reference/string_view/basic_string_view.html">std::basic_string_view</a></code>クラスに、部分文字列を<code><a href="../reference/string_view/basic_string_view.html">std::basic_string_view</a></code>として取得するメンバ関数<code>subview()</code>を追加</li>
 <li><code><a href="../reference/string/basic_string.html">std::basic_string</a></code>と<code><a href="../reference/string_view/basic_string_view.html">std::basic_string_view</a></code>を<code><a href="../reference/string/basic_string.html">std::basic_string</a></code>として連結させる<code>operator+</code>を追加</li>
 </ul>

reference/string/to_string.html

@@ -188,12 +188,12 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2025-08-24T16:54:17">
-        2025年08月24日 16時54分17秒
+      <span itemprop="datePublished" content="2026-01-20T02:35:12">
+        2026年01月20日 02時35分12秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
-        <span itemprop="name">Raclamusi</span>
+        <span itemprop="name">Akira Takahashi</span>
       </span>
       が更新
     </small></p>
@@ -214,15 +214,27 @@
 
   <div class="identifier-type">function</div><div class="header">&lt;string&gt;</div><h1 itemprop="name"><span class="namespace" title="namespace std">std::</span><span class="token">to_string</span><span class="cpp cpp11" title="C++11で追加">(C++11)</span></h1>
 <div itemprop="articleBody"><p><div class="codehilite"><pre><span></span><code><span class="k">namespace</span> <span class="n">std</span> <span class="p">{</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="n">to_string</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (1) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>       <span class="c1">// (2) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>               <span class="c1">// (3) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>      <span class="c1">// (4) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>          <span class="c1">// (5) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span> <span class="c1">// (6) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">float</span> <span class="n">val</span><span class="p">);</span>              <span class="c1">// (7) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">double</span> <span class="n">val</span><span class="p">);</span>             <span class="c1">// (8) C++11</span>
-  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="kt">double</span> <span class="n">val</span><span class="p">);</span>        <span class="c1">// (9) C++11</span>
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="n">to_string</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                          <span class="c1">// (1) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (1) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                 <span class="c1">// (2) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>       <span class="c1">// (2) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                         <span class="c1">// (3) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>               <span class="c1">// (3) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (4) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>      <span class="c1">// (4) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                    <span class="c1">// (5) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>          <span class="c1">// (5) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>           <span class="c1">// (6) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span> <span class="c1">// (6) C++26</span>
+
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">float</span> <span class="n">val</span><span class="p">);</span>                        <span class="c1">// (7) C++11</span>
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">double</span> <span class="n">val</span><span class="p">);</span>                       <span class="c1">// (8) C++11</span>
+  <span class="n"><a href="basic_string.html">string</a></span> <span class="nf">to_string</span><span class="p">(</span><span class="kt">long</span> <span class="kt">double</span> <span class="n">val</span><span class="p">);</span>                  <span class="c1">// (9) C++11</span>
 <span class="p">}</span>
 </code></pre></div>
 </p>
@@ -445,6 +457,10 @@ <h2>参照</h2>
 <li>C++26から<code>sprintf</code>ベースの仕様をやめて<code>std::format()</code>ベースの仕様になった</li>
 </ul>
 </li>
+<li><a href="https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3391r2.html" target="_blank">P3391R2 <code>constexpr std::format</code></a><ul>
+<li>C++26から整数バージョンが<code>constexpr</code>に対応した</li>
+</ul>
+</li>
 </ul></div>
 
       </div>

reference/string/to_wstring.html

@@ -188,8 +188,8 @@
 
     <p class="text-right"><small>
       最終更新日時(UTC):
-      <span itemprop="datePublished" content="2024-06-11T13:45:38">
-        2024年06月11日 13時45分38秒
+      <span itemprop="datePublished" content="2026-01-20T02:35:12">
+        2026年01月20日 02時35分12秒
       </span>
       <br/>
       <span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -214,12 +214,24 @@
 
   <div class="identifier-type">function</div><div class="header">&lt;string&gt;</div><h1 itemprop="name"><span class="namespace" title="namespace std">std::</span><span class="token">to_wstring</span><span class="cpp cpp11" title="C++11で追加">(C++11)</span></h1>
 <div itemprop="articleBody"><p><div class="codehilite"><pre><span></span><code><span class="k">namespace</span> <span class="n">std</span> <span class="p">{</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="n">to_wstring</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (1) C++11</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>       <span class="c1">// (2) C++11</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>               <span class="c1">// (3) C++11</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>      <span class="c1">// (4) C++11</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>          <span class="c1">// (5) C++11</span>
-  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span> <span class="c1">// (6) C++11</span>
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="n">to_wstring</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                          <span class="c1">// (1) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (1) C++26</span>
+
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>                 <span class="c1">// (2) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">int</span> <span class="n">val</span><span class="p">);</span>       <span class="c1">// (2) C++26</span>
+
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                         <span class="c1">// (3) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="n">val</span><span class="p">);</span>               <span class="c1">// (3) C++26</span>
+
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                <span class="c1">// (4) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>      <span class="c1">// (4) C++26</span>
+
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>                    <span class="c1">// (5) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>          <span class="c1">// (5) C++26</span>
+
+  <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span>           <span class="c1">// (6) C++11</span>
+  <span class="k">constexpr</span> <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">unsigned</span> <span class="kt">long</span> <span class="kt">long</span> <span class="n">val</span><span class="p">);</span> <span class="c1">// (6) C++26</span>
+
   <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">float</span> <span class="n">val</span><span class="p">);</span>              <span class="c1">// (7) C++11</span>
   <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">double</span> <span class="n">val</span><span class="p">);</span>             <span class="c1">// (8) C++11</span>
   <span class="n"><a href="basic_string.html">wstring</a></span> <span class="nf">to_wstring</span><span class="p">(</span><span class="kt">long</span> <span class="kt">double</span> <span class="n">val</span><span class="p">);</span>        <span class="c1">// (9) C++11</span>
@@ -451,6 +463,10 @@ <h2>参照</h2>
 <li>C++26から<code>sprintf</code>ベースの仕様をやめて<code>std::format()</code>ベースの仕様になった</li>
 </ul>
 </li>
+<li><a href="https://open-std.org/jtc1/sc22/wg21/docs/papers/2025/p3391r2.html" target="_blank">P3391R2 <code>constexpr std::format</code></a><ul>
+<li>C++26から整数バージョンが<code>constexpr</code>に対応した</li>
+</ul>
+</li>
 </ul></div>
 
       </div>