Optional Chaning Operator `?.` について

efcl のブックマーク 2018/04/22 23:37

<blockquote class="hatena-bookmark-comment"><a class="comment-info" href="https://b.hatena.ne.jp/entry/362795566/comment/efcl" data-user-id="efcl" data-entry-url="https://b.hatena.ne.jp/entry/s/docs.google.com/presentation/d/1XDUB1gGRmD6cIUu2-bVXEA-ZrWUIfQfhWxFKALCAXOQ/present?token=AC4w5VhfJpODv9U-eMPDV9hsjcePcz1zQA%3A1524407688487&includes_info_params=1" data-original-href="https://docs.google.com/presentation/d/1XDUB1gGRmD6cIUu2-bVXEA-ZrWUIfQfhWxFKALCAXOQ/present?token=AC4w5VhfJpODv9U-eMPDV9hsjcePcz1zQA%3A1524407688487&includes_info_params=1" data-entry-favicon="https://cdn-ak2.favicon.st-hatena.com/64?url=https%3A%2F%2Fdocs.google.com%2Fpresentation%2Fd%2F1XDUB1gGRmD6cIUu2-bVXEA-ZrWUIfQfhWxFKALCAXOQ%2Fpresent%3Ftoken%3DAC4w5VhfJpODv9U-eMPDV9hsjcePcz1zQA%253A1524407688487%26includes_info_params%3D1" data-user-icon="/users/efcl/profile.png">Optional Chaining Operator - Stage 2 - Claude Pache and Gabriel Isenberg</a><ul class="comment-tag" style="list-style: none; margin: 0px;"><li style="float: left">[<a href="https://b.hatena.ne.jp/q/ECMAScript">ECMAScript</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/proposal">proposal</a>]</li><li style="float: left">[<a href="https://b.hatena.ne.jp/q/slide">slide</a>]</li></ul><br><p style="clear: left">Optional Chaning Operator `?.` について</p><a class="datetime" href="https://b.hatena.ne.jp/efcl/20180422#bookmark-362795566"><span class="datetime-body">2018/04/22 23:37</span></a></blockquote><script src="https://b.st-hatena.com/js/comment-widget.js" charset="utf-8" async></script>

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