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How to suppress warnings globally in an R Script
...lly might not be a good idea.
To turn warnings back on, use
options(warn=0)
(or whatever your default is for warn, see this answer)
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Error handling in Bash
... trap!
tempfiles=( )
cleanup() {
rm -f "${tempfiles[@]}"
}
trap cleanup 0
error() {
local parent_lineno="$1"
local message="$2"
local code="${3:-1}"
if [[ -n "$message" ]] ; then
echo "Error on or near line ${parent_lineno}: ${message}; exiting with status ${code}"
else
echo "E...
Regular expression for a string containing one word but not another
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answered Jun 1 '10 at 20:26
KobiKobi
121k3939 gold badges240240 silver badges276276 bronze badges
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Applying function with multiple arguments to create a new pandas column
...n:
>>> import numpy as np
>>> df = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary func...
Sleep Command in T-SQL?
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Look at the WAITFOR command.
E.g.
-- wait for 1 minute
WAITFOR DELAY '00:01'
-- wait for 1 second
WAITFOR DELAY '00:00:01'
This command allows you a high degree of precision but is only accurate within 10ms - 16ms on a typical machine as it relies on GetTickCount. So, for example, the call W...
How to merge two sorted arrays into a sorted array? [closed]
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Sumit Singh
23k88 gold badges7070 silver badges9797 bronze badges
answered May 11 '11 at 1:19
Greg HewgillGreg Hewgill
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How to count TRUE values in a logical vector
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answered Feb 3 '10 at 12:29
MarekMarek
43.9k1313 gold badges8484 silver badges114114 bronze badges
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How do I make a matrix from a list of vectors in R?
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[8,] 8 1 2 3 4 5
[9,] 9 1 2 3 4 5
[10,] 10 1 2 3 4 5
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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...open("echo -n hi", \
shell=True, stdout=subprocess.PIPE).communicate()[0])
As for the b preceding the string it indicates that it is a byte sequence which is equivalent to a normal string in Python 2.6+
http://docs.python.org/3/reference/lexical_analysis.html#literals
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Creating a BLOB from a Base64 string in JavaScript
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+50
The atob function will decode a Base64-encoded string into a new string with a character for each byte of the binary data.
const byte...