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Is it possible to GROUP BY multiple columns using MySQL?
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GROUP BY col1, col2, col3
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Java: method to get position of a match in a String?
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14 Answers
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Reshaping data.frame from wide to long format
... idvar = c("Code", "Country"),
timevar = "Year",
times = 1950:1954)
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Returning value from called function in a shell script
...also true for some other shells.
Here's how to do each of those options:
1. Echo strings
lockdir="somedir"
testlock(){
retval=""
if mkdir "$lockdir"
then # Directory did not exist, but it was created successfully
echo >&2 "successfully acquired lock: $lockdir"
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Run an OLS regression with Pandas Data Frame
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154
I think you can almost do exactly what you thought would be ideal, using the statsmodels packa...
Most efficient way of making an if-elif-elif-else statement when the else is done the most?
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100
The code...
options.get(something, doThisMostOfTheTime)()
...looks like it ought to be fast...
Email Address Validation in Android on EditText [duplicate]
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edited Feb 21 at 13:14
milosmns
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How to get client's IP address using JavaScript?
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Concatenate two slices in Go
I'm trying to combine the slice [1, 2] and the slice [3, 4] . How can I do this in Go?
7 Answers
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