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Summarizing multiple columns with dplyr? [duplicate]
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but what if i want to do mean for columns 1-13, sd for columns 14-30, sum for columns 31-100, and don't want to list them all out?
– Arthur Yip
Sep 5 '18 at 20:08
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Get the length of a String
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– Scott Walter
Jun 4 '14 at 13:03
7
The trouble with countElements is that it is declared...
How to create a bash script to check the SSH connection?
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edited Mar 4 '13 at 15:22
Tim Cooper
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Sending email in .NET through Gmail
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13
There are no problems with SPF using this method. Every email client can be configured to do exactly this. You just may get problems if you...
How can I check if multiplying two numbers in Java will cause an overflow?
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answered Sep 24 '14 at 12:13
bcoughlanbcoughlan
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Find and replace strings in vim on multiple lines
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edited Nov 15 '13 at 16:36
answered Nov 15 '13 at 7:56
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SVN undo delete before commit
...r, thanks for the tips.
– karim
Oct 13 '10 at 8:57
5
As per the link, use svn -R revert to undele...
Given an array of numbers, return array of products of all other numbers (no division)
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edited Sep 16 '13 at 7:31
smac89
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Maven in Eclipse: step by step installation [closed]
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13 Answers
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What is the difference between id and class in CSS, and when should I use them? [duplicate]
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edited Apr 6 '16 at 13:27
Dave Everitt
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