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How to select the rows with maximum values in each group with dplyr? [duplicate]
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Try this:
result <- df %>%
group_by(A, B) %>%
filter(value...
jQuery find events handlers registered with an object
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16 Answers
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Convert a float64 to an int in Go
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213
package main
import "fmt"
func main() {
var x float64 = 5.7
var y int = int(x)
fmt.Printl...
How to access maven.build.timestamp for resource filtering
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edited Sep 12 at 15:02
Java Crazy
5777 bronze badges
answered Nov 5 '12 at 9:04
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How do I detect a click outside an element?
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81 Answers
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Add column with number of days between dates in DataFrame pandas
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df['A'] = pd.to_datetime(df['A'])
df['B'] = pd.to_datetime(df['B'])
In [11]: df.dtypes # if already datetime64 you don't need to use to_datetime
Out[11]:
A datetime64[ns]
B datetime64[ns]
dtype: object
In [12]: df['A'] - df['B']
Out[12]:
one -58 days
two -26 days
dtype: timedelta64[ns...
How to change file encoding in NetBeans?
I want to change encoding of file in NetBeans IDE (ver 6.9.1), let's say from ANSII to UTF-8. How can I do that?
8 Answers
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Does JavaScript guarantee object property order?
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12 Answers
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Error - trustAnchors parameter must be non-empty
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