Posts Tagged ‘ internal ’

Which functions in R base call internal code?

September 14, 2010
Which functions in R base call internal code?

In a recent question on Stack Overflow about speeding up group-by operations, Marek wondered which functions called .Internal code (and consequently were fast). I was surprised to see that there appears to be no built-in way to check whether or not this is the case (though is.primitive is available for primitive functions). Writing such a function is quite straight forward....

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