<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div><span></span></div><div><div><span></span></div><div><div><span></span></div><div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="direction: inherit;"><br></div><div class="AppleOriginalContents" style="direction: ltr;"><blockquote type="cite"><div>2016/07/22 0:33、Chris Lattner via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> のメール：</div><div style="direction: inherit;"><br></div><div><div>Hello Swift community,<br class=""><br class="">The third review of "SE-0117: Allow distinguishing between public access and public overridability" begins now and runs through July 25. The proposal is available here:<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://github.com/apple/swift-evolution/blob/master/proposals/0117-non-public-subclassable-by-default.md">https://github.com/apple/swift-evolution/blob/master/proposals/0117-non-public-subclassable-by-default.md</a><br class=""><br class="">Reviews are an important part of the Swift evolution process. All reviews should be sent to the swift-evolution mailing list at<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://lists.swift.org/mailman/listinfo/swift-evolution">https://lists.swift.org/mailman/listinfo/swift-evolution</a><br class=""><br class="">or, if you would like to keep your feedback private, directly to the review manager.<br class=""><br class="">What goes into a review?<br class=""><br class="">The goal of the review process is to improve the proposal under review through constructive criticism and contribute to the direction of Swift. When writing your review, here are some questions you might want to answer in your review:<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>* What is your evaluation of the proposal?<br class=""></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;">+1 for the first design</div><div class="AppleOriginalContents" style="direction: ltr;">(it would be nice to have stored properties on extensions if we couldn't subclass anymore as that is one of the cases that I would subclass something, or uses associated object in objc)</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;">----------</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;">I am totally in agreement with Garths’ most lucid and cogent "reframing" of this proposal:</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div class="AppleOriginalContents" style="direction: ltr;"><div class="AppleOriginalContents" style="direction: ltr;"><i>All we are doing now is subdividing public into two separate sublevels, public and open. Just as public subsumes all the privileges of internal, open subsumes public.</i></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;"><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;">Then we can just reframe the gist of it like this:</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;"><table cellspacing="0" cellpadding="0" style="border-collapse: collapse">
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<td valign="top" style="width: 113.0px; height: 9.0px; background-color: #bec0bf; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);"><b>Before SE-0117</b></font></div>
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<td valign="top" style="width: 100.0px; height: 9.0px; background-color: #bec0bf; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);"><b>After SE-0117</b></font></div>
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<td valign="top" style="width: 79.0px; height: 10.0px; border-style: solid; border-width: 0.0px 0.0px 0.0px 1.0px; border-color: #000000 #000000 #000000 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px; font-size: 12px; line-height: normal; min-height: 14px;"><br></div>
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<td valign="top" style="width: 115.0px; height: 10.0px; border-style: solid; border-width: 0.0px 1.0px 0.0px 0.0px; border-color: #000000 #cfd0d0 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px; text-align: right;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">Subclassable →</font></div>
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<td valign="top" style="width: 113.0px; height: 9.0px; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">public</font></div>
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<td valign="top" style="width: 100.0px; height: 9.0px; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#00c8ff" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; color: rgb(0, 200, 255); -webkit-text-stroke-color: rgb(0, 200, 255);"><b>open</b></font></div>
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<td valign="top" style="width: 115.0px; height: 11.0px; border-style: solid; border-width: 0.0px 1.0px 0.0px 0.0px; border-color: #000000 #cfd0d0 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px; text-align: right;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">Visible →</font></div>
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<td valign="top" style="width: 113.0px; height: 10.0px; border-style: solid; border-width: 1.0px 1.0px 2.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #a8a8a8 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">public</font></div>
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<td valign="top" style="width: 100.0px; height: 10.0px; border-style: solid; border-width: 1.0px 1.0px 2.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #a8a8a8 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">public</font></div>
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<td valign="top" style="width: 79.0px; height: 10.0px; border-style: solid; border-width: 0.0px 0.0px 2.0px 1.0px; border-color: #000000 #000000 #a8a8a8 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">Outside Module</font></div>
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<td valign="top" style="width: 115.0px; height: 11.0px; border-style: solid; border-width: 0.0px 1.0px 0.0px 0.0px; border-color: #000000 #cfd0d0 #000000 #000000; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px; text-align: right;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);"><b>Default →</b></font></div>
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<td valign="top" style="width: 79.0px; height: 10.0px; border-style: solid; border-width: 2.0px 0.0px 0.0px 1.0px; border-color: #a8a8a8 #000000 #000000 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);"><b>Inside Module</b></font></div>
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<td valign="top" style="width: 113.0px; height: 9.0px; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">private</font></div>
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<td valign="top" style="width: 100.0px; height: 9.0px; border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cfd0d0 #cfd0d0 #cfd0d0 #cfd0d0; padding: 4.0px 4.0px 4.0px 4.0px"><div style="margin: 0px;"><font face="Hiragino Kaku Gothic ProN" color="#000000" style="font-size: 10px; line-height: normal; font-family: 'Hiragino Kaku Gothic ProN'; -webkit-font-kerning: none; font-variant-ligatures: common-ligatures; -webkit-text-stroke-color: rgb(0, 0, 0);">private</font></div>
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</table><br></div><div class="AppleOriginalContents" style="direction: ltr;">This is a lot less controversial and if this is what this proposal <i>really</i> means, I think there would be a lot less resistance to it...</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><blockquote type="cite"><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>* Is the problem being addressed significant enough to warrant a change to Swift?<br class=""></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;">Yes</div><br><blockquote type="cite"><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>* Does this proposal fit well with the feel and direction of Swift?<br class=""></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;">Yes</div><br><blockquote type="cite"><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>* If you have used other languages or libraries with a similar feature, how do you feel that this proposal compares to those?<br class=""></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;">Kotlin w/open classes except that it limits subclassing wether inside or outside of a 'module' (basically taking harder stance against subclassing).</div><div class="AppleOriginalContents" style="direction: ltr;"><br></div><div class="AppleOriginalContents" style="direction: ltr;">I like swifts "middle-way" approach.</div><br><blockquote type="cite"><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>* How much effort did you put into your review? A glance, a quick reading, or an in-depth study?<br class=""></div></div></blockquote><div class="AppleOriginalContents" style="direction: ltr;">Been following this proposal since original discussions, participated in previous reviews, read all the emails in his discussion and toyed a bit more with kotlin to understand it's open/sealed implementation compared to this proposal, also followed a couple conversations/blogs online about this proposal.</div><br><blockquote type="cite"><div><div>More information about the Swift evolution process is available at<br class=""><br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://github.com/apple/swift-evolution/blob/master/process.md">https://github.com/apple/swift-evolution/blob/master/process.md</a><br class=""><br class="">Thank you,<br class=""><br class="">-Chris Lattner<br class="">Review Manager<br class=""><br class=""><br class="">_______________________________________________<br class="">swift-evolution mailing list<br class=""><a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a><br class=""><a href="https://lists.swift.org/mailman/listinfo/swift-evolution">https://lists.swift.org/mailman/listinfo/swift-evolution</a><br class=""></div></div></blockquote></div><br></div></div></div></div></body></html>