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Devise Secret Key was not set

...ration back end. Active Admin in turn uses Devise for user authentication. Now, when I try to deploy the app using capistrano on the VPS server, I get the below error: ...
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How to parse a string into a nullable int

... And now in the C# 6, it can be one line! Int32.TryParse(stringVal, out var tempVal) ? tempVal : (int?)null; – MerickOWA May 1 '14 at 14:23 ...
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How to get the nth element of a python list or a default if not available

... never fails. I still don't like to rely on try/except, for a case that I know will happen, but this increases my willingness to consider it. – ToolmakerSteve Dec 15 '13 at 3:27 6 ...
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Image library for Python 3

...4, has a nice doc, you may pip3 install Image (I was using pillow without knowing), and you from PIL import Image. It also supports all the major platforms now. When looking for a PIL for python3, this is definitely the choice. – Yosh Oct 13 '14 at 15:25 ...
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VS 2012: Scroll Solution Explorer to current file

... I use VS2015 + ReSharper on Win10 and this is the only way that works now. If you're willing to use a different shortcut, look for "SolutionExplorer.SyncWithActiveDocument" on Keyboard options. – ScottRhee Oct 17 '16 at 5:45 ...
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input() error - NameError: name '…' is not defined

... your name: input("Enter your name again: ") Enter your name again: dude Now, when input("Enter your name: ") is executed, it waits for the user input and the user input is a valid Python function invocation and so that is also invoked. That is why we are seeing Enter your name again: prompt again...
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Android adb “Unable to open sync connection!”

...gt; Applications > Development > USB debugging And everything works now on Eclipse and Mac OS X 10.7.3. share | improve this answer | follow | ...
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Unbound classpath container in Eclipse

...choose its path - something like "program files\Java\Jre#" -> "ok". And now you can select it from the list. share | improve this answer | follow | ...
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Error: CUICatalog: Invalid asset name supplied: (null), or invalid scale factor : 2.000000

... I didn't know about the $arg3 syntax for conditional breakpoints. Where can I learn more? – Zev Eisenberg Jun 2 '15 at 21:35 ...
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How to get URL parameter using jQuery or plain JavaScript?

I have seen lots of jQuery examples where parameter size and name are unknown. 33 Answers ...