Regardless of your level, there are questions you can answer
Even just edit a badly worded question helps
SO usually takes a few(?) minutes - so closure
Never use code you don't understand
Read about the Nissian dev
Watching the GitHub R source code mirror will allow you to monitor small changes that occur
Also, look at how base R functions are written, e.g. NCOL
Really useful to see how R is built and the compromises it has to make
I recommend giving at least a 6 week observing period before asking/answering
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