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Assign multiple columns using := in data.table, by group
... a b col1 col2 mean sum Name1 Longer%
# 1: 1 1 hi hello 2.5 5 10 15
# 2: 2 2 hi hello 3.5 7 14 21
# 3: 3 3 hi hello 4.5 9 18 27
# 4: 1 4 hi hello 2.5 5 10 15
# 5: 2 5 hi hello 3.5 7 14 21
# 6: 3 6 hi hello 4.5 9 18 27
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Sublime text 2 - find and replace globally ( all files and in all directories )
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edited Jan 1 '13 at 8:01
answered Jan 1 '13 at 7:39
Ric...
How to use Boost in Visual Studio 2010
...od already, I'm going to expand on it more specifically for Visual Studio 2010 as requested, and include information on compiling in the various optional components which requires external libraries.
If you are using headers only libraries, then all you need to do is to unarchive the boost download...
How do I test if a string is empty in Objective-C?
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How do I use an INSERT statement's OUTPUT clause to get the identity value?
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answered Jun 12 '12 at 15:07
marc_smarc_s
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Sublime Text 2 and 3: open the same file multiple times
... "file view", hit Enter
– Eric
Apr 20 '18 at 12:16
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Pythonic way to combine FOR loop and IF statement
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Create whole path automatically when writing to a new file
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440
Something like:
File file = new File("C:\\user\\Desktop\\dir1\\dir2\\filename.txt");
file.getPa...
How can I tell AngularJS to “refresh”
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answered Sep 6 '12 at 17:09
DustinDustin
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How can I deploy/push only a subdirectory of my git repo to Heroku?
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There's an even easier way via git-subtree. Assuming you want to push your folder 'output' as t...