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How to 'bulk update' with Django?
....models import F
Entry.objects.all().update(n_pingbacks=F('n_pingbacks') + 1)
See the documentation.
However, note that:
This won't use ModelClass.save method (so if you have some logic inside it won't be triggered).
No django signals will be emitted.
You can't perform an .update() on a slice...
When vectors are allocated, do they use memory on the heap or the stack?
... how you use them (you could point element 0 to the free store and element 1 to the stack, say).
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How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
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109
You can pass just left or right to set_xlim:
plt.gca().set_xlim(left=0)
For the y axis, use...
What CSS selector can be used to select the first div within another div
...child element of #content)
Another option:
#content > div:nth-of-type(1) { /* css */ }
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AngularJS validation with no enclosing
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184
You may use the ng-form angular directive (see docs here) to group anything, even outside a ht...
Searching word in vim?
...ith /word . How can I search only for word , excluding searches for word1 and word2 ?
4 Answers
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In Python script, how do I set PYTHONPATH?
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192
You don't set PYTHONPATH, you add entries to sys.path. It's a list of directories that should ...
UIViewContentModeScaleAspectFill not clipping
I'm trying to draw some thumbnail images at a fixed size (100x100) using UIImageView . I've set the frame size of my image view to be 100x100, and set the contentMode to UIViewContentModeScaleAspectFill .
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Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
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291
The posted stack trace indicates that a RuntimeException was encountered in a Daemon thread. Thi...