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Pinging servers in Python
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117
This function works in any OS (Unix, Linux, macOS, and Windows)
Python 2 and Python 3
EDITS:
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How do you reindex an array in PHP?
...hich I would like to reindex so the keys are reversed (ideally starting at 1):
21 Answers
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Assign pandas dataframe column dtypes
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Since 0.17, you have to use the explicit conversions:
pd.to_datetime, pd.to_timedelta and pd.to_numeric
(As mentioned below, no more "magic", convert_objects has been deprecated in 0.17)
df = pd.DataFrame({'x': {0: 'a', 1: 'b'}, ...
how does multiplication differ for NumPy Matrix vs Array classes?
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127
The main reason to avoid using the matrix class is that a) it's inherently 2-dimensional, and ...
Is there a standard sign function (signum, sgn) in C/C++?
I want a function that returns -1 for negative numbers and +1 for positive numbers.
http://en.wikipedia.org/wiki/Sign_function
It's easy enough to write my own, but it seems like something that ought to be in a standard library somewhere.
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Return multiple values in JavaScript?
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1380
No, but you could return an array containing your values:
function getValues() {
return ...
Android dex gives a BufferOverflowException when building
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19 Answers
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JSONDecodeError: Expecting value: line 1 column 1 (char 0)
I am getting error Expecting value: line 1 column 1 (char 0) when trying to decode JSON.
16 Answers
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Converting a list to a set changes element order
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11 Answers
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