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Summarizing multiple columns with dplyr? [duplicate]

... <dbl> #> 1 1 3.08 2.98 2.98 2.91 #> 2 2 3.03 3.04 2.97 2.87 #> 3 3 2.85 2.95 2.95 3.06 If you want to summarize only certain columns, use summarise_at or summarise_if functions. Alternatively, the purrrlyr package provides the same functionality: library(purr...
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Determine version of Entity Framework I am using?

...are two versions 1 and 2? And version 2 is referred to as Entity Framework 4.0? 10 Answers ...
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What is the difference between _tmain() and main() in C++?

... Salman von Abbas 20.8k88 gold badges6464 silver badges5656 bronze badges answered May 22 '09 at 0:09 jalfjalf 223k4...
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How to force LINQ Sum() to return 0 while source collection is empty

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How to handle back button in activity

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How can I get nth element from a list?

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How to parse the AndroidManifest.xml file inside an .apk package

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How to change the indentation width in emacs javascript mode

I'd like to use 2 spaces for my indents instead of 4. I can change the default behavior of C mode using: 9 Answers ...
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(-2147483648> 0) returns true in C++?

-2147483648 is the smallest integer for integer type with 32 bits, but it seems that it will overflow in the if(...) sentence: ...
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Create zip file and ignore directory structure

... answered Mar 14 '12 at 20:59 Lars KotthoffLars Kotthoff 98.3k1313 gold badges176176 silver badges180180 bronze badges ...