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Correct way to use get_or_create?
...irst_name='John',
last_name='Lennon',
defaults={'birthday': date(1940, 10, 9)},
)
# get_or_create() didn't have to create an object.
>>> created
False
Explanation:
Fields to be evaluated for similarity, have to be mentioned outside defaults. Rest of the fields have to be include...
is not JSON serializable
...
cyph3rn3tz
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answered May 28 '13 at 11:04
alecxealecxe
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Showing data values on stacked bar chart in ggplot2
... Henrik
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answered Jul 11 '11 at 3:34
RamnathRamnath
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Python OpenCV2 (cv2) wrapper to get image size?
...ls.
– Tomasz Gandor
Jan 9 '15 at 23:46
1
I found this helpful: docs.opencv.org/3.0-beta/doc/py_tu...
Can Vim highlight matching HTML tags like Notepad++?
...onGreg Sexton
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Is PHP's count() function O(1) or O(n) for arrays?
...
John Carter
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answered Apr 29 '11 at 17:42
Vladislav Ra...
JSR-303 @Valid annotation not working for list of child objects
...
4 Answers
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How to open the Chrome Developer Tools in a new window?
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429
As of Chrome 52, the UI has changed. When the Developer Tools dialog is open, you select the v...
Select objects based on value of variable in object using jq
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374
Adapted from this post on Processing JSON with jq, you can use the select(bool) like this:
$ jq...
How to convert a boolean array to an int array
...[ True, False, True], dtype=bool)
>>> x + [1, 2, 3]
array([2, 2, 4])
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