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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
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365
DateTime.strptime can handle seconds since epoch. The number must be converted to a string:
r...
How to get record created today by rails activerecord?
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edited Apr 3 '18 at 21:17
answered May 27 '10 at 9:02
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CPU Privilege Rings: Why rings 1 and 2 aren't used?
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3 Answers
3
Active
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How does RegexOptions.Compiled work?
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304
RegexOptions.Compiled instructs the regular expression engine to compile the regular expressio...
Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)
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I would suggest using the duplicated method on the Pandas Index itself:
df3 = df3[~df3.index.duplicated(keep='first')]
While all the other methods work, the currently accepted answer is by far the least performant for the provided example. Furthermore, while the groupby method is only slightly les...
MySQL, update multiple tables with one query
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underscore_d
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answered Feb 23 '12 at 16:41
IrfanIrfan
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Intellij IDEA Java classes not auto compiling on save
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253
UPDATED
For IntelliJ IDEA 12+ releases we can build automatically the edited sources if we are ...
How can you use an object's property in a double-quoted string?
...-quoted string, you have to enclose that subexpression in $():
$foo = 1,2,3
"$foo[1]" # yields "1 2 3[1]"
"$($foo[1])" # yields "2"
$bar = "abc"
"$bar.Length" # yields "abc.Length"
"$($bar.Length)" # yields "3"
PowerShell only expands variables in those cases, nothing more. To force eval...
How to fix the uninitialized constant Rake::DSL problem on Heroku?
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answered Jun 7 '11 at 9:31
KaleKale
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