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redirect COPY of stdout to log file from within bash script itself
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297
#!/usr/bin/env bash
# Redirect stdout ( > ) into a named pipe ( >() ) running "tee"
exe...
Maximum on http header values?
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325
No, HTTP does not define any limit. However most web servers do limit size of headers they acce...
How to split last commit into two in Git
...o that now it looks like this:
1
something
something else
something again
2
Now I decide that I want to split it into two, and I want the insertion of the
first line to be in the first commit, and the insertion of the last line to be
in the second commit.
First I go back to HEAD's parent, but I ...
What are the pros and cons of the SVN plugins for Eclipse, Subclipse and Subversive? [closed]
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32 Answers
32
Active
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How to extend an existing JavaScript array with another array, without creating a new array
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Arsen Khachaturyan
5,90933 gold badges3232 silver badges3434 bronze badges
answered Sep 3 '09 at 15:27
DzinXDzinX
43....
Find and Replace text in the entire table using a MySQL query
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edited Aug 7 '12 at 4:45
answered Aug 7 '12 at 4:06
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curl POST format for CURLOPT_POSTFIELDS
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edited Mar 7 '11 at 20:40
answered Mar 7 '11 at 20:35
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Google Gson - deserialize list object? (generic type)
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edited Mar 20 '18 at 12:20
Daniel Pryden
52.7k1212 gold badges8787 silver badges128128 bronze badges
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Remove duplicated rows using dplyr
...tion for this purpose.
Original answer below:
library(dplyr)
set.seed(123)
df <- data.frame(
x = sample(0:1, 10, replace = T),
y = sample(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then only keep the first row:
df %>% group_by(x, y) %>% filter(row_num...