Dear all,
In my R package that I'm developing, I use `installed.packages(priority =
"base")` to programmatically get all core/base R packages (i.e. base, stats,
etc.). And similarly, I use installed.packages(priority = "recommended")` to
programmatically get the recommended R packages (i.e. mgcv, lattice, etc.).
However, CRAN has requested to not use `installed.packages()`, as it is slow. I
fully get and agree with that assesment. I used installed.packages()` anyway
because I could not find a better, fool-proof alternative.
Nonetheless, I was asked to change this code for optimalisation. So I would
like to ask: how do I programmatically get all base/core R packages safely and
efficiently, but without using `installed.packages()`? And the same question
for recommended R packages. I have of course Googled it, and looked at R's
documentation (though R's documentation is large, so it's easy to miss
something); no solution found. So if any of you has a smart idea: I'm all ears.
Thank you in advance.
Kind regards,
Tony.
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