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Mean per group in a data.frame [duplicate]
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A third great alternative is using the package data.table, which also has the class data.frame,...
Upgrade Node.js to the latest version on Mac OS
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Here's how I successfully upgraded from v0.8.18 to v0.10.20 without any other requirements like brew etc, (type these commands in the terminal):
sudo npm cache clean -f (force) clear you npm cache
sudo npm install -g n install n (this might take a while)
sudo n stable upgrade to ...
Importing a GitHub project into Eclipse
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As mentioned in Alain Beauvois's answer, and now (Q4 2013) better explained in
Eclipse for GitHub
EGit 3.x manual (section "Starting from existing Git Repositories")
Eclipse with GitHub
EGit tutorial
Copy the URL from GitHub and select in Eclipse from the menu the
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How to use a WSDL
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Olorunfemi Ajibulu
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answered Aug 19 '09 at 20:48
marc_smarc_s
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Counting DISTINCT over multiple columns
... Jason HornerJason Horner
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Extract a dplyr tbl column as a vector
... to a single column.
– filups21
Apr 20 '18 at 12:26
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Asp.net 4.0 has not been registered
...are three, count 'em, three, command prompts below Microsoft Visual Studio 2010 | Visual Studio Tools, namely: Visual Studio Command Prompt (2010) Visual Studio x64 Cross Tools Command Prompt (2010) Visual Studio x64 Win64 Command Prompt (2010) Does it matter which one is used for this command?
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Disabling swap files creation in vim
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edited Mar 10 '18 at 5:20
puk
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Why is no one using make for Java?
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– Laurence Gonsalves
Feb 5 '10 at 20:02
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How do you determine the ideal buffer size when using FileInputStream?
...at the golden size would be byte[] of 524288 lengths. Well, you may win 10-20ms if you switch between small buffer 4Kb and big buffer 524Kb depending on the file size but it's not worth it. So 524 Kb was the best option in my case.
– Kirill Karmazin
Oct 25 '18 ...