blocks|key|4401037|text|尝尝这个。在所有其他建议中，这是唯一一个对我有效的建议。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4401038|转到applications文件夹，将Xcode重命名为您想要的任何名称，然后打开Xcode。检查注释选择现在是否有效，如果可以，您可以返回并将Xcode重命名为其默认名称。如果没有，请将Xcode重命名为其原始名称，然后继续搜索其他解决方案。|4401039|这对我来说非常有效。|4401040|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Try this. Out of all the other suggestions, this was the only one that worked for me.

Go to your applications folder and rename Xcode to whatever you want, then open the Xcode. Check to see if the comment selection now works, if so, you can go back and rename Xcode to its default name. If not, rename Xcode back to its original name anyway, and continue searching for another solution.

This worked perfectly for me.

blocks|key|4401008|text|在安装Xcode8.1测试版后，所有的变通方法都不起作用。我最终发现，将Xcode测试版从应用程序文件夹移到另一个位置(桌面是我放我的位置)，然后运行sudo+usr/libexec/xpccachectl解决了我遇到的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4401009|entityMap^0|23|S|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

None of the workarounds worked for me after installing xcode 8.1 beta. I finally found that moving the Xcode beta out of the applications folder into a different location (desktop is where i put mine) then running <code>sudo usr/libexec/xpccachectl</code> fixed the issues i was having.

blocks|key|4400831|text|在德语Macintosh计算机上，系统键盘快捷键覆盖了Xcode注释部分的快捷键。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4400832|只需停用Hilfemenü+anzeigen快捷方式即可。(显示帮助)|offset|length|style|CODE|4400833|​|4400834|📷|atomic|4400835|4400836|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7b8afff3e6418b835e22c4c4555638da.png|imageAlt^0|0|4|I|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|11|8|@]|9|@$D|12|E|13|1|14]]|A|$]]|$1|M|3|I|5|6|7|15|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U|V|-4]]]]

On a German Macintosh Computer, there is a System keyboard shortcut overriding the Xcode comment section shortcut.

Simply deactivate the <code>Hilfemenü anzeigen</code> shortcut. (show help) 

<a href="https://i.stack.imgur.com/Ie7cf.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Ie7cf.png" alt="Conflicting Shortcut"></a>

blocks|key|4400911|text|我的情况有点不同(愚蠢吗？)：我发现我不能注释特定文件中特定部分的任何行。我用Xcode8.1和Xcode8.2尝试了上面所有的方法，但是没有成功。最后我发现它是由下面这样的评论技巧引起的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4400912|1+/*
2+code+
3+//*/
4+code|code-block|syntax|javascript|4400913|在Xcode中，您不能用Cmd%2B/注释第2行，因为它已经被/**/注释过了，这是可以的。但是，您甚至不能用Cmd%2B/注释第4行，因为Xcode可能认为它仍然在/*+*/块中，但实际上并非如此。如果我删除了第3行中的//，那么注释第4行就可以了。|4400914|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

My situation is a bit different(stupid?): 
I found I can't comment any line from a particular part of a particular file. I tried all the methods above with Xcode 8.1 and Xcode 8.2, but got no luck. Finally I found it was caused by a comment trick like below,

<pre><code>1 /*
2 code 
3 //*/
4 code
</code></pre>

In Xcode, you can't comment line 2 with Cmd+/ because it has been commented already by /**/, which is fine. However, you can't even comment line 4 with Cmd+/, as Xcode may think it's still in a /* */ block, but it's actually not. If I remove // from line 3, then commenting line 4 works fine.

blocks|key|4400988|text|看起来，如果你在代码中的任何地方嵌套了/*，那么从那时起它就会破坏注释。Others+have+reported表示嵌套块注释中会发生这种情况。但是，如果你在任何地方嵌套了/*，包括一个字符串，它都会失败。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4400989|注意下面这段代码使用的是路径字符/和通配符*，它们共同构成了/*。这一行之后的任何注释在XCode中都不起作用。|style|CODE|4400990|int+foo+=+"this+line+can+be+commented+out";

predicate+=+[NSPredicate+predicateWithFormat:@"(cachedAudioDataURL+like+'*/Library/Private*/*'))+AND+(NOT+(cachedAudioDataURL+like+'*/Documents/*'))"];

int+bar+=+"broken+-+can't+be+commented+out";|code-block|syntax|javascript|4400991|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/41154607/5135551^0|10|K|0|0|G|1|L|1|U|2|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@$A|Z|B|10|F|G]|$A|11|B|12|F|G]|$A|13|B|14|F|G]]|9|@]|C|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|C|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

It seems that if you have nested /* anywhere in your code it breaks the commenting from then on. <a href="https://stackoverflow.com/a/41154607/5135551">Others have reported</a> that it happens with nested block comments. However if you have nested /* anywhere, including a string it will fail.

Note the following bit of code is working with path characters <code>/</code> and wildcards <code>*</code> that together make <code>/*</code>. Anything after this line and commenting out doesn't work in XCode.

<pre><code>int foo = "this line can be commented out";

predicate = [NSPredicate predicateWithFormat:@"(cachedAudioDataURL like '*/Library/Private*/*')) AND (NOT (cachedAudioDataURL like '*/Documents/*'))"];

int bar = "broken - can't be commented out";
</code></pre>

blocks|key|4400942|text|我以Joe_04_04的身份这么做了。将de+Xcode应用程序重命名为其他名称并恢复为原始名称|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4400943|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I did as Joe_04_04. Renamed de Xcode APP to anything else and back to original name

blocks|key|4401258|text|修复Xcode8注释/取消注释菜单："sudo+/usr/libexec/xpccachectl“，然后重新启动。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4401259|这对我很有效。祝好运。|4401260|entityMap^0|J|T|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

Fix Xcode 8 Comment/UnComment menus: "<code>sudo /usr/libexec/xpccachectl</code>" then reboot.

This works for me. Good Luck.

blocks|key|4401347|text|此错误也发生在macOS+10.12.3+(16D32)的Xcode+8.2.1+(8C1002)上。还有另一个Xcode7.3，也安装在我的机器上。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4401348|我找到了两个解决方案：|4401349|在终端中输入sudo+/usr/libexec/xpccachectl，然后reboot.rename+Xcode8.2.1到Xcode8，重新启动Xcode8，现在它可以工作了！|offset|length|style|CODE|4401350|entityMap^0|0|0|6|T|1R|6|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@$F|O|G|P|H|I]|$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

This bug also happens on Xcode 8.2.1 (8C1002) of macOS 10.12.3 (16D32). And there is another Xcode 7.3, which is fine, also installed on my machine. 

I find two solutions: 
1. Type <code>sudo /usr/libexec/xpccachectl</code> in Terminal, then reboot. 
2. rename the Xcode 8.2.1 to <code>Xcode8</code>,restart Xcode8, now it works!

blocks|key|4401294|text|我刚刚第一次遇到同样的问题(我已经使用不同版本的Xcode超过一年，也许是两年)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4401295|检查完这些线程后，我注意到我的Xcode有一个挂起的更新，无法安装更新，因为MacBook是打开的。我关闭/退出了Xcode，安装了更新，强制退出了所有打开的应用程序，重启了我的笔记本电脑，问题得到了解决。|4401296|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I just experienced this same issue for the first time (I've been using various versions of Xcode for over a year, maybe two). 

After reviewing these threads, I noticed that my MacBook Pro had a pending update and could not install the update because Xcode was open. I closed/quit Xcode, installed the update, forced quit all open apps, restarted my laptop and the issue was resolved.

blocks|key|4401381|text|在Xcode+8.3.2中，这种情况(2017年5月)偶尔也会发生。退出Xcode还不足以解决这个问题。注销和重新登录为我修复了它。我不需要运行命令行工具或重新启动。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4401382|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

This still (May 2017) happens to me occasionally in Xcode 8.3.2. Quitting Xcode is not enough to clear it up. Logging out and logging back in fixed it for me. I did not have to run a command line tool or reboot.

blocks|key|4401219|text|不是为了淡化上面的讨论，但我尝试了上面提出的所有解决方案，都失败了。最后，我将Xcode更新到了最新版本9.3+(2018)，现在一切都正常了！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4401220|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Not to downplay the discussion above, but I tried all the solutions proposed above and all failed. Finally I updated Xcode to the latest Version 9.3 (2018) and everything works now!

Sometimes, it seems I can't comment my code with the usual shortcut (<code>command</code> + <code>/</code>) under Xcode 8 Beta 4. The option is disabled in the menu (screenshot below).

Do you have any idea why?
Am I the only one having this issue?

<a href="https://i.stack.imgur.com/dz49h.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dz49h.png" alt="Screenshot of the disabled command"></a>

EDIT: It seems to work again after restarting Xcode... Still looking from where it comes. It's a bit annoying...

EDIT2: It still occurs on Xcode 8.1. Maybe because I have 2 versions of Xcode installed (normal and beta)? Can't fix it anymore with a simple restart!

EDIT3: the proposed <code>xpccachectl</code> command to fix it doesn't exist on MacOS High Sierra.

Can't comment selection

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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有时候，我似乎不能在Xcode8Beta4下用通常的快捷键(command + /)来注释我的代码。这个选项在菜单中是禁用的(下面的截图)。你知道为什么吗？我是唯一一个有这个问题的人吗？​​编辑:重启Xcode后，它似乎又可以工作了。仍然在寻找它来自的地方。这有点烦人。EDIT2:它仍然出现在Xcode8.1上。也许是因为我安装了两个版本的Xcode (普通版和测试版)？不能再通过简单的重启来修复

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