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Sort rows in data.table in decreasing order on string key `order(-x,v)` gives error on data.table 1.
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edited Jun 20 at 9:12
Community♦
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answered Sep 10 '12 at 14:41
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See what process is using a file in Mac OS X
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lsof will list open files, but it can be a bit awkward for momentary touches (eg, if the file is...
mkdir's “-p” option
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edited Mar 26 '19 at 20:39
Grant Foster
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answer...
UIPopovercontroller dealloc reached while popover is still visible
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UIPopoverControllers should always be held in an instance variable. It is a good practice to cr...
Is there a case insensitive jQuery :contains selector?
...Contains : "jQuery(a).text().toUpperCase().indexOf(m[3].toUpperCase())>=0"
});
This will extend jquery to have a :Contains selector that is case insensitive, the :contains selector remains unchanged.
Edit: For jQuery 1.3 (thanks @user95227) and later you need
jQuery.expr[':'].Contains = func...
Flexbox Not Centering Vertically in IE
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In Python, how do you convert seconds since epoch to a `datetime` object?
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datetime.datetime.fromtimestamp will do, if you know the time zone, you could produce the same o...
How do I revert master branch to a tag in git?
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You can do
git checkout master
git reset --hard tag_ABC
git push --force origin master
Please...
Restore file from old commit in git
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sehesehe
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How to combine date from one field with time from another field - MS SQL Server
...Date part of your Time column is also always zero (base date: January 1, 1900)
Adding them returns the correct result.
SELECT Combined = MyDate + MyTime FROM MyTable
Rationale (kudos to ErikE/dnolan)
It works like this due to the way the date is stored as two 4-byte
Integers with the left...