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Scala: What is a TypeTag and how do I use it?
...: List[String] => "list of strings"
^
<console>:24: warning: non-variable type argument Foo in type pattern List[Foo]↩
is unchecked since it is eliminated by erasure
case _: List[Foo] => "list of foos"
^
To solve this problem Manifests were ...
Why would one use nested classes in C++?
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How to design a product table for many kinds of product where each product has many parameters
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How to programmatically display version/build number of target in iOS app?
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394
There are 2 Numbers!
The marketing release number is for the customers, called version number. ...
What is the canonical way to check for errors using the CUDA runtime API?
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How to clear variables in ipython?
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answered Apr 8 '14 at 10:27
aisbaaaisbaa
6,86244 gold badges2727 silver badges3838 bronze badges
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Apply a function to every row of a matrix or a data frame
...:6, nrow=3, byrow=TRUE)
R> M
[,1] [,2]
[1,] 1 2
[2,] 3 4
[3,] 5 6
R> apply(M, 1, function(x) 2*x[1]+x[2])
[1] 4 10 16
R>
This takes a matrix and applies a (silly) function to each row. You pass extra arguments to the function as fourth, fifth, ... arguments to app...