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How do I convert an interval into a number of hours with postgres?
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Probably the easiest way is:
SELECT EXTRACT(epoch FROM my_interval)/3600
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Is a Python dictionary an example of a hash table?
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edited Jun 26 '15 at 3:13
zvyn
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answered Sep 22 '08 at 13:23
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How to set username and password for SmtpClient object in .NET?
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308
The SmtpClient can be used by code:
SmtpClient mailer = new SmtpClient();
mailer.Host = "mail...
Automatically expanding an R factor into a collection of 1/0 indicator variables for every factor le
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Use the model.matrix function:
model.matrix( ~ Species - 1, data=iris )
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How can I split a shell command over multiple lines when using an IF statement?
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edited Jul 13 at 16:27
answered Sep 3 '13 at 19:22
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Replacing some characters in a string with another character
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340
echo "$string" | tr xyz _
would replace each occurrence of x, y, or z with _, giving A__BC__...
How to remove space between axis & area-plot in ggplot2?
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3 Answers
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Can git operate in “silent mode”?
...idaraqnid
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Python: Append item to list N times
...generation of a list of things to add via the above techniques):
a = [1,2,3]
b = [4,5,6]
a.extend(b)
# a is now [1,2,3,4,5,6]
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