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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.
Explanation: np.is...
C/C++ macro string concatenation
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158
If they're both strings you can just do:
#define STR3 STR1 STR2
The preprocessor automaticall...
How to override trait function and call it from the overridden function?
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Maciej Pyszyński
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answered Aug 13 '12 at 17:30
ircmaxellircmaxell...
How to map and remove nil values in Ruby
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8 Answers
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Check if a value exists in pandas dataframe index
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258
This should do the trick
'g' in df.index
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Why are `private val` and `private final val` different?
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82
So, this is just a guess, but it was a perennial annoyance in Java that final static variables ...
Why was the arguments.callee.caller property deprecated in JavaScript?
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Pacerier
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answered Oct 25 '08 at 1:51
olliejolliej
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Git pre-push hooks
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answered Nov 16 '10 at 16:48
ordnungswidrigordnungswidrig
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Java variable number or arguments for a method
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278
That's correct. You can find more about it in the Oracle guide on varargs.
Here's an example:
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SQL UPDATE all values in a field with appended string CONCAT not working
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answered Nov 8 '10 at 21:46
Marc BMarc B
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