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mongodb: insert if not exists
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edited Dec 11 '17 at 8:18
penguin2048
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answered May ...
How can I remove all objects but one from the workspace in R?
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answered May 31 '11 at 16:01
AndrieAndrie
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How to get GET (query string) variables in Express.js on Node.js?
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Nei
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answered Aug 2 '11 at 13:30
Marcus GranströmMarcus Granström
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Iterate through every file in one directory
...n them, so you can use Dir::each_child or Dir::children (as suggested by ma11hew28) or do something like this:
Dir.foreach('/path/to/dir') do |filename|
next if filename == '.' or filename == '..'
# Do work on the remaining files & directories
end
Dir::foreach and Dir::entries (as well as...
Difference between TCP and UDP?
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answered May 11 '11 at 20:57
HeisenbugHeisenbug
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How to sum up elements of a C++ vector?
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Real life example, when to use OUTER / CROSS APPLY in SQL
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answered Feb 14 '12 at 11:12
Martin SmithMartin Smith
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“wait_fences: failed to receive reply: 10004003”?
...eems to do the trick.
– Michael
Sep 11 '09 at 18:27
1
I know the lag you're talking about. I've s...
How to jQuery clone() and change id?
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Community♦
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answered Apr 12 '12 at 15:09
Selvakumar ArumugamSelvakumar Arumugam
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