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Check if OneToOneField is None in Django

... Thank you for this solution. Unfortunately, this doesn't work all the time. In case you want to work with select_related() now or in the future -- or maybe even to be sure you also handle other sorts of magic which may happen elsewhere -- you have to extend the test as follows: if hasat...
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How many GCC optimization levels are there?

..., the default if no optimization level is specified) -O1 (optimize minimally) -O2 (optimize more) -O3 (optimize even more) -Ofast (optimize very aggressively to the point of breaking standard compliance) -Og (Optimize debugging experience. -Og enables optimizations that do not interfere...
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How do I get the real .height() of a overflow: hidden or overflow: scroll div?

...qual to the minimum clientHeight the element would require in order to fit all the content in the viewpoint without using a vertical scrollbar. It includes the element padding but not its margin. share | ...
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How to make an immutable object in Python?

... Can you use namedtuple internally inside the class instead of instantiating the object externally? I'm very new to python but the advantage to your other answer is that I can have a class hide the details and also have the power of things like optional p...
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Rename all files in directory from $filename_h to $filename_half?

... Just use bash, no need to call external commands. for file in *_h.png do mv "$file" "${file/_h.png/_half.png}" done Do not add #!/bin/sh For those that need that one-liner: for file in *.png; do mv "$file" "${file/_h.png/_half.png}"; done ...
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Capture keyboardinterrupt in Python without try-except

...re some way in Python to capture KeyboardInterrupt event without putting all the code inside a try - except statement? ...
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PowerShell Script to Find and Replace for all Files with a Specific Extension

... I would like to add that testing the solutions provided out all worked, but this one was the easiest for readability. I was able to hand this to a co-worker and he could easily understand what was going on. Thanks for the assistance. – Brandon Ma...
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MongoDB: Combine data from multiple collections into one..how?

..., reduce; db.users_comments.remove(); // setup sample data - wouldn't actually use this in production db.users.remove(); db.comments.remove(); db.users.save({firstName:"Rich",lastName:"S",gender:"M",country:"CA",age:"18"}); db.users.save({firstName:"Rob",lastName:"M",gender:"M",country:"US",age:"25...
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log messages appearing twice with Python Logging

I'm using Python logging, and for some reason, all of my messages are appearing twice. 8 Answers ...
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How to compare type of an object in Python?

Basically I want to do this: 14 Answers 14 ...