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How to initialize log4j properly?
After adding log4j to my application I get the following output every time I execute my application:
24 Answers
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
...se the values attribute:
In [1]: df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=['a', 'b', 'c']); df
A B
a 1 4
b 2 5
c 3 6
In [2]: df.index.values
Out[2]: array(['a', 'b', 'c'], dtype=object)
This accesses how the data is already stored, so there's no need for a conversion.
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C# vs Java Enum (for those new to C#)
...public static readonly Planet MERCURY = new Planet("Mercury", 3.303e+23, 2.4397e6);
public static readonly Planet VENUS = new Planet("Venus", 4.869e+24, 6.0518e6);
public static readonly Planet EARTH = new Planet("Earth", 5.976e+24, 6.37814e6);
public static readonly Plan...
Best implementation for hashCode method for a collection
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442
The best implementation? That is a hard question because it depends on the usage pattern.
A f...
Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
I have dll library with unmanaged C++ API code I need to use in my .NET 4.0 application. But every method i try to load my dll i get an error:
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Behaviour of increment and decrement operators in Python
... default.
– newacct
Sep 28 '09 at 7:47
45
Also, be aware that, in Python, += and friends are not ...
Most underused data visualization [closed]
...substr(start.date, 9, 10),
"&c=", substr(start.date, 1,4),
"&d=", substr(end.date,6,7),
"&e=", substr(end.date, 9, 10),
"&f=", substr(end.date, 1,4),
"&g=d&ignore=.csv", sep="")
stock.data &l...
Way to go from recursion to iteration
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345
Usually, I replace a recursive algorithm by an iterative algorithm by pushing the parameters th...
Making git auto-commit
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answered Jan 7 '09 at 12:40
JesperEJesperE
58.6k1515 gold badges129129 silver badges188188 bronze badges
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Vim: insert the same characters across multiple lines
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941
Move the cursor to the n in name.
Enter visual block mode (Ctrlv).
Press j three times (or 3j)...