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        <div class="chatlog__header"><span class="chatlog__author" style="color:rgb(17,128,106)" title="koher" data-user-id="293624673265123328">koher</span> <a href="/channels/306995750418513920?category=main&amp;channel=swift-2&amp;message_id=452520044736544768"><span class="chatlog__timestamp" title="Saturday, June 2, 2018 5:11 PM"></span></a><a href="#chatlog__message-container-452519634277761024">6/2/2018 5:11 PM</a></div>
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve"><code class="chatlog__markdown-pre chatlog__markdown-pre--inline">KeyPath</code> に <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">WritableKeyPath</code> を append して <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">WritableKeyPath</code> 生成するメソッドが（ドキュメント上？）できてしまってるの↓のせいか。 <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">where</code> 以下がコメントアウト。 <code class="chatlog__markdown-pre chatlog__markdown-pre--multiline language-swift">extension _AppendKeyPath /* where Self == WritableKeyPath&lt;T,U&gt; */ {</code>
            <a href="https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift#L1812">https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift#L1812</a></span></div>
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                <div class="chatlog__embed-title"><a class="chatlog__embed-title-link" href="https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift">
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                  <div class="chatlog__markdown chatlog__markdown-preserve">swift - The Swift Programming Language</div>
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        <div class="chatlog__short-timestamp" title="Saturday, June 2, 2018 5:13 PM">5:13 PM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">あれ？↓についてた。 <a href="https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift#L1827">https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift#L1827</a></span></div>
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                <div class="chatlog__embed-title"><a class="chatlog__embed-title-link" href="https://github.com/apple/swift/blob/master/stdlib/public/core/KeyPath.swift">
                    <div class="chatlog__markdown chatlog__markdown-preserve">apple/swift</div>
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                  <div class="chatlog__markdown chatlog__markdown-preserve">swift - The Swift Programming Language</div>
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