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How do I import the Django DoesNotExist exception?
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139
You don't need to import it - as you've already correctly written, DoesNotExist is a property o...
How can I make Vim's `J` and `gq` commands use one space after a period?
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3 Answers
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How to remove all rows in a numpy.ndarray that contain non-numeric values
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>>> a = np.array([[1,2,3], [4,5,np.nan], [7,8,9]])
array([[ 1., 2., 3.],
[ 4., 5., nan],
[ 7., 8., 9.]])
>>> a[~np.isnan(a).any(axis=1)]
array([[ 1., 2., 3.],
[ 7., 8., 9.]])
and reassign this to a...
How to delete the last n commits on Github and locally?
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3 Answers
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Scala 2.8 breakOut
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325
The answer is found on the definition of map:
def map[B, That](f : (A) => B)(implicit bf :...
How to check if a column exists in Pandas
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3 Answers
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C char array initialization
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edited Jan 20 '15 at 18:53
answered Sep 8 '13 at 21:51
oua...
Can TCP and UDP sockets use the same port?
...CP and UDP. Many protocols already do this, for example DNS works on udp/53 and tcp/53.
Technically the port pools for each protocol are completely independent, but for higher level protocols that can use either TCP or UDP it's convention that they default to the same port number.
When writing yo...