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      <div class="chatlog__message-aside"><img class="chatlog__avatar" src="https://cdn.discordapp.com/avatars/293624673265123328/accd07acc220a18568ba46a6e9ede18a.png?size=512" alt="Avatar" loading="lazy"></div>
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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=672738576714170369"><span class="chatlog__timestamp" title="Friday, January 31, 2020 9:40 AM"></span></a><a href="#chatlog__message-container-672738073116934154">1/31/2020 9:40 AM</a></div>
        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">あー。それは SwiftImage の <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">ImageSlice</code> は <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">ArraySlice</code> を踏襲してたつもりだけど 2 次元では真似できないな・・・。 &lt; 幅も変えられる</span> <span class="chatlog__edited-timestamp" title="Friday, January 31, 2020 9:41 AM">(edited)</span></div>
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        <div class="chatlog__short-timestamp" title="Friday, January 31, 2020 9:42 AM">9:42 AM</div>
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        <div class="chatlog__content chatlog__markdown"><span class="chatlog__markdown-preserve">そもそも <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">set</code> がなかった・・・。サイズ違いは <code class="chatlog__markdown-pre chatlog__markdown-pre--inline">precondition</code> してるのかと思ってたけど。 <code class="chatlog__markdown-pre chatlog__markdown-pre--multiline language-swift"> public subscript(xRange: Range&lt;Int&gt;, yRange: Range&lt;Int&gt;) -&gt; ImageSlice&lt;Pixel&gt; { return ImageSlice(image: self, xRange: xRange, yRange: yRange) }</code></span></div>
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