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Pandas - Get first row value of a given column
...ect the ith row, use iloc:
In [31]: df_test.iloc[0]
Out[31]:
ATime 1.2
X 2.0
Y 15.0
Z 2.0
Btime 1.2
C 12.0
D 25.0
E 12.0
Name: 0, dtype: float64
To select the ith value in the Btime column you could use:
In [30]: df_test['Btime'].iloc[0]
Out[3...
Remove unwanted parts from strings in a column
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answered Dec 3 '12 at 11:33
eumiroeumiro
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Jackson enum Serializing and DeSerializer
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294
The serializer / deserializer solution pointed out by @xbakesx is an excellent one if you wish...
How do I pass command line arguments to a Node.js program?
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Check if an element is present in an array [duplicate]
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ECMAScript 2016 incorporates an includes() method for arrays that specifically solves the problem, and so is now the preferred method.
[1, 2, 3].includes(2); // true
[1, 2, 3].includes(4); // false
[1, 2, 3].includes(1, 2); //...
python dataframe pandas drop column using int
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172
You can delete column on i index like this:
df.drop(df.columns[i], axis=1)
It could work stra...
Commenting multiple lines in DOS batch file
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answered Dec 15 '11 at 21:39
pdubspdubs
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How to sum a variable by group
...quency, by=list(Category=x$Category), FUN=sum)
Category x
1 First 30
2 Second 5
3 Third 34
In the example above, multiple dimensions can be specified in the list. Multiple aggregated metrics of the same data type can be incorporated via cbind:
aggregate(cbind(x$Frequency, x$Metric2,...
How to downgrade or install an older version of Cocoapods
... of cocoa pods via the following command:
sudo gem install cocoapods -v 0.25.0
You can use older installed versions with following command:
pod _0.25.0_ setup
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List all of the possible goals in Maven 2?
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120
The goal you indicate in the command line is linked to the lifecycle of Maven. For example, the...