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How to filter None's out of List[Option]?

...the same time, you can use flatten: scala> someList.flatten res0: List[String] = List(Hello, Goodbye) share | improve this answer | follow | ...
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Center a column using Twitter Bootstrap 3

...s Bootstrap's own offset classes so it requires no change in markup and no extra CSS. The key is to set an offset equal to half of the remaining size of the row. So for example, a column of size 2 would be centered by adding an offset of 5, that's (12-2)/2. In markup this would look like: <div ...
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Undefined symbols for architecture arm64

... If your Architectures and Valid Architectures are all right, you may check whether you have added $(inherited) , which will add linker flags generated in pods, to Other Linker Flags as below: share...
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MySql server startup error 'The server quit without updating PID file '

... Did you follow the instructions from brew install mysql? Set up databases to run AS YOUR USER ACCOUNT with: For mysql 5.x: unset TMPDIR mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp To set...
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Can you run GUI applications in a Docker container?

... You can simply install a vncserver along with Firefox :) I pushed an image, vnc/firefox, here: docker pull creack/firefox-vnc The image has been made with this Dockerfile: # Firefox over VNC # # VERSION 0.1 # DOCKER-VERSION ...
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Use underscore inside Angular controllers

...derscore, it attaches itself to the window object, and so is available globally. So you can use it from Angular code as-is. You can also wrap it up in a service or a factory, if you'd like it to be injected: var underscore = angular.module('underscore', []); underscore.factory('_', ['$window', fu...
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Mailto links do nothing in Chrome but work in Firefox?

...omputer. I know at work, it will run thunderbird; if they have outlook installed it may run outlook, etc. Personally, it did not run gmail by default, I had to set it up that way. – kennypu Jul 14 '13 at 1:55 ...
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Difference between staticmethod and classmethod

... Maybe a bit of example code will help: Notice the difference in the call signatures of foo, class_foo and static_foo: class A(object): def foo(self, x): print "executing foo(%s, %s)" % (self, x) @classmethod def class_foo(cls, x): print "executing class_foo(%s, %s...
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How do I apply a CSS class to Html.ActionLink in ASP.NET MVC?

... @ewomack has a great answer for C#, unless you don't need extra object values. In my case, I ended up using something similar to: @Html.ActionLink("Delete", "DeleteList", "List", new object { }, new { @class = "delete"}) ...
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Syntax Error: Not a Chance

...ng blocks by braces instead of indentation will never be implemented. Normally, imports from the special __future__ module enable features that are backwards-incompatible, such as the print() function, or true division. So the line from __future__ import braces is taken to mean you want to enable ...