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How to properly check if std::function is empty in C++11?
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edited Jun 20 at 9:12
Community♦
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Rebuild IntelliJ project indexes
...oris PavlovićBoris Pavlović
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Xcode stops working after set “xcode-select -switch”
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answered Mar 7 '12 at 11:32
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rotating axis labels in R
...ular to the axis?
– andrewj
Aug 26 '12 at 6:46
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Te style can be set for each axis separately, e...
Should I git ignore xcodeproject/project.pbxproj file?
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How to invert a grep expression
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Peter Mortensen
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answered Dec 7 '10 at 5:31
Eric FortisEric Fort...
In Java, are enum types inside a class static?
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edited May 25 '12 at 12:21
answered Mar 19 '09 at 20:10
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What exactly is Heroku?
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answered Dec 29 '12 at 12:45
TomTom
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Undock Chrome Developer Tools
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Convert a matrix to a 1 dimensional array
...pose the matrix first if you want it by rows or columns.
> m=matrix(1:12,3,4)
> m
[,1] [,2] [,3] [,4]
[1,] 1 4 7 10
[2,] 2 5 8 11
[3,] 3 6 9 12
> as.vector(m)
[1] 1 2 3 4 5 6 7 8 9 10 11 12
> as.vector(t(m))
[1] 1 4 7 10 2 5 8 11 ...