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Because I like living on the edge, I just updated my #RStats to the newly released v4.0.0. While I would always recommend waiting a while before updating to a new major version, you (like me) might want to update *now*. If that's the case, keep some things in mind:
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2/6 First of all: On my machine running #macOS 10.15.4 everything seems to be working fine. I had no problems updating or with any of the packages I (re-)installed. Which leads to the second point:
3/6 As usual with R and a major version update, you'll have to reinstall *all* packages you had installed. This can be a great time to start fresh and only install the packages you actually need (as you need them).
4/6 If you just want to reinstall all your old packages, see this helpful tweet: https://twitter.com/dailyzad/status/1253506170372980737
Note: This won't work with non-cran packages (e.g. installed from Guthub) or packages that don't support R v4.0.0.
Note: This won't work with non-cran packages (e.g. installed from Guthub) or packages that don't support R v4.0.0.
5/6 A change with potentially big consequences is that R now uses a stringsAsFactors = FALSE default. Calls to data.frame() and read.table() using the default will behave differently after the update. Check your old code for errors!
6/6 If you want to test if the new version works with your workflow/packages before updating, you could ask a colleague who already updated or use https://rstudio.cloud/ as soon as v4.0.0 is available there.
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