[Rd] built-in NAMED(obj) from within R
Hadley Wickham
h.wickham at gmail.com
Fri Nov 9 14:00:46 CET 2012
>> The goal is to ascertain whether a copy of an object has been made.
>
> Then :
>
> ?tracemem
>
> One demonstration of using both together is here :
>
> http://stackoverflow.com/a/10312843/403310
Note that tracemem detects duplications (in a technical R sense), not
copies - i.e.
x <- 1:10
tracemem(x)
x[11] <- 11L
although all the individual elements are copied, the vector is not
duplicated. This confused me at first, so I thought I'd point it out.
Hadley
--
RStudio / Rice University
http://had.co.nz/
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