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How do I get the picture size with PIL?
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513
from PIL import Image
im = Image.open('whatever.png')
width, height = im.size
According to t...
What is a non-capturing group in regular expressions?
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15 Answers
15
Active
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Group by multiple columns in dplyr, using string vector input
...ike so:
data = data.frame(
asihckhdoydkhxiydfgfTgdsx = sample(LETTERS[1:3], 100, replace=TRUE),
a30mvxigxkghc5cdsvxvyv0ja = sample(LETTERS[1:3], 100, replace=TRUE),
value = rnorm(100)
)
# get the columns we want to average within
columns = names(data)[-3]
library(dplyr)
df1 <- data...
Rebasing and what does one mean by rebasing pushed commits
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edited Sep 29 '14 at 15:51
answered Apr 26 '10 at 16:37
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An efficient way to transpose a file in Bash
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115
awk '
{
for (i=1; i<=NF; i++) {
a[NR,i] = $i
}
}
NF>p { p = NF }
END {...
What is the best open XML parser for C++? [duplicate]
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12 Answers
12
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How to make a promise from setTimeout
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121
Update (2017)
Here in 2017, Promises are built into JavaScript, they were added by the ES2015...
What characters are valid for JavaScript variable names?
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12 Answers
12
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What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
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edited Oct 8 '18 at 14:13
answered Jun 17 '11 at 16:11
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Passing variables in remote ssh command
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190
If you use
ssh pvt@192.168.1.133 "~/tools/run_pvt.pl $BUILD_NUMBER"
instead of
ssh pvt@192...