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Can't subtract offset-naive and offset-aware datetimes

... have a timezone aware timestamptz field in PostgreSQL. When I pull data from the table, I then want to subtract the time right now so I can get it's age. ...
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Can I use __init__.py to define global variables?

... subpackages and each with several modules. How can I access that variable from these modules? 4 Answers ...
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?

...&var.int2-&var.int1, &var.int1+diff==&var.int2)' is false. From what I can say with my puny test cases, you are Stop at 0x0013f3: (106) Invalid instruction 0x00dd printf crashes. "O_O" gcc 4.4@x86_64-suse-linux We like to think that: ..05 int has the size of pointers but 'sizeo...
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ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller

What is the correct way to find the absolute path to the App_Data folder from a Controller in an ASP.NET MVC project? I'd like to be able to temporarily work with an .xml file and I don't want to hardcode the path. ...
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Xcode Simulator: how to remove older unneeded devices?

... Did you tried to just delete the 4.3 SDK from within the Xcode Package? /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs please also delete the corresponding .dmg file in ~/Library/Caches/com.apple.dt.Xcode/Downl...
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Passing command line arguments from Maven as properties in pom.xml

Is it possible to pass arguments from command line to properties in pom.xml file ? for example I run mvn ... argument 5 ...
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Ajax request returns 200 OK, but an error event is fired instead of success

...e implemented an Ajax request on my website, and I am calling the endpoint from a webpage. It always returns 200 OK , but jQuery executes the error event. I tried a lot of things, but I could not figure out the problem. I am adding my code below: ...
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How to request Administrator access inside a batch file

I am trying to write a batch file for my users to run from their Vista machines with UAC. The file is re-writing their hosts file, so it needs to be run with Administrator permissions. I need to be able to send them an email with a link to the .bat file. The desired behavior is that when they rig...
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How to capture stdout output from a Python function call?

... Try this context manager: from io import StringIO import sys class Capturing(list): def __enter__(self): self._stdout = sys.stdout sys.stdout = self._stringio = StringIO() return self def __exit__(self, *args): ...
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Using cURL with a username and password?

... Note that if you do this from the console the password will remain in the history which is ... wrong. You should specify just -u user and CURL will ask you for the password in no-echo mode. – Cristian Vrabie Apr...