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reference/execution/execution/into_variant.html

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@@ -200,8 +200,8 @@
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<p class="text-right"><small>
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最終更新日時(UTC):
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<span itemprop="datePublished" content="2025-05-10T04:18:45">
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2025年05月10日 04時18分45秒
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<span itemprop="datePublished" content="2025-05-10T08:07:46">
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2025年05月10日 08時07分46秒
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</span>
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<span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -253,7 +253,7 @@ <h3>Senderアルゴリズムタグ <code>into_variant</code></h3>
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</p>
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<p><code>impls-for&lt;into_variant_t&gt;::get-state</code>メンバは、下記ラムダ式と等価な関数呼び出し可能なオブジェクトで初期化される。</p>
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<ul>
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<li><a href="sender.html">Sender</a><a href="value_types_of_t.html">値完了シグニチャを集約</a>した<code><a href="../../variant/variant.html">variant</a>&lt;<a href="../../variant/variant.html">tuple</a>&lt;...&gt;, ...&gt;</code>型を<a class="cpprefjp-defined-word" data-desc="デフォルト初期化。`T x;`構文での初期化。トリビアルにデフォルト構築可能な型の場合は初期化されず(オブジェクトのlifetimeは開始される)、そうではないクラス型はデフォルトコンストラクタで初期化する。配列型の場合は各要素が再帰的にデフォルト初期化される">デフォルト構築</a>して返す</li>
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<li><a href="sender.html">Sender</a><a href="value_types_of_t.html">値完了シグニチャを集約</a>した<code><a href="../../variant/variant.html">variant</a>&lt;<a href="../../variant/variant.html">tuple</a>&lt;...&gt;, ...&gt;</code>型を<code><a href="../../type_traits/type_identity.html">type_identity</a></code>クラステンプレートのパラメータに格納して返す</li>
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</ul>
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<p><div class="codehilite"><pre><span></span><code><span class="p">[]</span><span class="o">&lt;</span><span class="k">class</span> <span class="nc">Sndr</span><span class="p">,</span> <span class="k">class</span> <span class="nc">Rcvr</span><span class="o">&gt;</span><span class="p">(</span><span class="n">Sndr</span><span class="o">&amp;&amp;</span> <span class="n">sndr</span><span class="p">,</span> <span class="n">Rcvr</span><span class="o">&amp;</span> <span class="n">rcvr</span><span class="p">)</span> <span class="k">noexcept</span>
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<span class="o">-&gt;</span> <span class="n"><a href="../../type_traits/type_identity.html">type_identity</a></span><span class="o">&lt;</span><span class="n"><a href="value_types_of_t.html">value_types_of_t</a></span><span class="o">&lt;</span><span class="n"><a href="child-type.html">child-type</a></span><span class="o">&lt;</span><span class="n">Sndr</span><span class="o">&gt;</span><span class="p">,</span> <span class="n"><a href="env_of_t.html">env_of_t</a></span><span class="o">&lt;</span><span class="n">Rcvr</span><span class="o">&gt;&gt;&gt;</span> <span class="p">{</span>
@@ -263,12 +263,13 @@ <h3>Senderアルゴリズムタグ <code>into_variant</code></h3>
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</p>
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<p><code>impls-for&lt;into_variant_t&gt;::complete</code>メンバは、下記ラムダ式と等価な関数呼び出し可能なオブジェクトで初期化される。</p>
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<ul>
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<li><a href="set_value.html">値完了</a>の場合、引数パック<code>args...</code>から<code><a href="../../variant/variant.html">variant</a></code>型の送信値を構築して接続先<a href="receiver.html">Receiver</a><a href="set_value.html">値完了関数</a>を呼び出す。</li>
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<li><code>State</code>として渡される前述<code>get-state</code>メンバ<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>型(<code><a href="../../type_traits/type_identity.html">type_identity</a></code>)から、<code>into_varinat</code>の送信値となる<code><a href="../../variant/variant.html">variant</a>&lt;<a href="../../variant/variant.html">tuple</a>&lt;...&gt;, ...&gt;</code>型情報を取り出す。</li>
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<li><a href="set_value.html">値完了</a>の場合、引数パック<code>args...</code>から送信値を構築して接続先<a href="receiver.html">Receiver</a><a href="set_value.html">値完了関数</a>を呼び出す。</li>
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<li><a href="set_error.html">エラー完了</a>または<a href="set_stopped.html">停止完了</a>の場合、接続先<a href="receiver.html">Receiver</a>の同種完了関数に全引数を転送する。</li>
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</ul>
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<p><div class="codehilite"><pre><span></span><code><span class="p">[]</span><span class="o">&lt;</span><span class="k">class</span> <span class="nc">State</span><span class="p">,</span> <span class="k">class</span> <span class="nc">Rcvr</span><span class="p">,</span> <span class="k">class</span> <span class="nc">Tag</span><span class="p">,</span> <span class="n">class</span><span class="p">...</span> <span class="n">Args</span><span class="o">&gt;</span><span class="p">(</span>
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<span class="k">auto</span><span class="p">,</span> <span class="n">State</span><span class="p">,</span> <span class="n">Rcvr</span><span class="o">&amp;</span> <span class="n">rcvr</span><span class="p">,</span> <span class="n">Tag</span><span class="p">,</span> <span class="n">Args</span><span class="o">&amp;&amp;</span><span class="p">...</span> <span class="n">args</span><span class="p">)</span> <span class="k">noexcept</span> <span class="o">-&gt;</span> <span class="kt">void</span> <span class="p">{</span>
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<span class="k">if</span> <span class="k">constexpr</span> <span class="p">(</span><span class="n"><a href="../../concepts/same_as.html">same_as</a></span><span class="o">&lt;</span><span class="n">Tag</span><span class="p">,</span> <span class="n">set_value_t</span><span class="o">&gt;</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">if</span> <span class="k">constexpr</span> <span class="p">(</span><span class="n"><a href="../../concepts/same_as.html">same_as</a></span><span class="o">&lt;</span><span class="n">Tag</span><span class="p">,</span> <span class="n"><a href="set_value.html">set_value_t</a></span><span class="o">&gt;</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">using</span> <span class="n">variant_type</span> <span class="o">=</span> <span class="k">typename</span> <span class="n">State</span><span class="o">::</span><span class="n">type</span><span class="p">;</span>
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<span class="n">TRY</span><span class="o">-</span><span class="n">SET</span><span class="o">-</span><span class="n">VALUE</span><span class="p">(</span><span class="n">rcvr</span><span class="p">,</span> <span class="n">variant_type</span><span class="p">(</span><span class="n"><a href="decayed-tuple.html">decayed-tuple</a></span><span class="o">&lt;</span><span class="n">Args</span><span class="p">...</span><span class="o">&gt;</span><span class="p">{</span><span class="n"><a href="../../utility/forward.html">std::forward</a></span><span class="o">&lt;</span><span class="n">Args</span><span class="o">&gt;</span><span class="p">(</span><span class="n">args</span><span class="p">)...}));</span>
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<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>

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