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Crontab Day of the Week syntax
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385
0 and 7 both stand for Sunday, you can use the one you want, so writing 0-6 or 1-7 has the same ...
Regex how to match an optional character
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256
Use
[A-Z]?
to make the letter optional. {1} is redundant. (Of course you could also write [A...
SQL Logic Operator Precedence: And and Or
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ludovico
78044 silver badges1515 bronze badges
answered Aug 6 '09 at 20:19
Charles BretanaCharles Bretana
1...
How to apply a function to two columns of Pandas dataframe
...n [49]: df
Out[49]:
0 1
0 1.000000 0.000000
1 -0.494375 0.570994
2 1.000000 0.000000
3 1.876360 -0.229738
4 1.000000 0.000000
In [50]: def f(x):
....: return x[0] + x[1]
....:
In [51]: df.apply(f, axis=1) #passes a Series object, row-wise
Out[51]:
0 1....
Find XOR of all numbers in a given range
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5 Answers
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What does numpy.random.seed(0) do?
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598
np.random.seed(0) makes the random numbers predictable
>>> numpy.random.seed(0) ; nu...
Regex to remove all (non numeric OR period)
I need for text like "joe ($3,004.50)" to be filtered down to 3004.50 but am terrible at regex and can't find a suitable solution. So only numbers and periods should stay - everything else filtered. I use C# and VS.net 2008 framework 3.5
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Appropriate datatype for holding percent values?
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5 Answers
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Integer division with remainder in JavaScript?
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15 Answers
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