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data.table vs dplyr: can one do something well the other can't or does poorly?
... some powerful features, all while maintaining the consistency in syntax.
1. Speed
Quite a few benchmarks (though mostly on grouping operations) have been added to the question already showing data.table gets faster than dplyr as the number of groups and/or rows to group by increase, including ben...
'ssh-keygen' is not recognized as an internal or external command
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IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...pendencies, and move the junit-4.7.jar up, so that it comes before Android 1.6 Platform in the classpath. Now the test runner will be happy as it loads the new JUnit version.
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How to get process ID of background process?
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answered Dec 16 '09 at 0:05
camhcamh
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Build.scala, % and %% symbols meaning
I'm new to Play! Framework 2.1 (java version) and have no experience with scala. I don't understand what are and what does % and %% mean in Build.scala. I googled about them but couldn't find their meaning.
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Unable to hide welcome screen in Emacs
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175
Add the following to your $HOME/.emacs:
(setq inhibit-startup-screen t)
The next time you s...
Passing variables in remote ssh command
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190
If you use
ssh pvt@192.168.1.133 "~/tools/run_pvt.pl $BUILD_NUMBER"
instead of
ssh pvt@192...
How do I assign an alias to a function name in C++?
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114
There are different approaches:
With C++11 with non-template non-overloaded functions you ca...
What is the difference between Int and Integer?
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"Integer" is an arbitrary precision
type: it will hold any number no
matter how big, up...