Le 27/04/10 22:16, Dominick Samperi a écrit :
It appears that the runtime for an R script can more than double if a few
references to a function foo() are replaced by more explict references
of the form pkgname::foo().
It would probably help your question if you provide some benchmarks.
a::b is just a shortcut for `::`( a, b ).
The more explicit references are of course required when two
loaded packages define the same function.
Not really. You can :
- resolve once: my_foo <- pkgname::foo
- import the variable into your namespace using the importFrom namespace
directive.
I can understand why use of this mechanism is not free in an
interpreted environment like R, but the cost seems rather high.
Dominick
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