misc

[franknarf1]

• "Filtering on logical columns." should also suggest z==TRUE or z==FALSE instead of just wrapping in parens.
• Aggregation example should also point to the CJ section re covering unobserved levels
• maybe anyNA should show up in Basics

Writing improvements

• For DT syntax, i should refer explicitly to rows, not vaguer "subset" (I'm reviewing Arun's useR 2019 slides) which can also describe per-group subset and column subset. (All three meanings apply to .SD)

[franknarf1]

Resources to review:

• Dirk's R intro with a tinyverse/dependency-minimization spiel: https://github.com/eddelbuettel/gsir-te

Re fancy stuff / r internals:

• There are all these things: ls(envir = baseenv(), pattern="^\\.", all.names=TRUE) : .Last.value, .Platform, .Machine, .Library, .Traceback, .Devices, .packages()[], etc. I'm not sure if .Options or options() is more kosher.
• Anyway, just read the docs RShowDoc("R-ints", type = "html")
• RConsole GUI configuration, auto-read from file.path(Sys.getenv("R_USER"), "Rconsole")

External resources

• The link behind Asking a question online > "exhausted other resources" is now broken. Quoting or paraphrasing it might be too wordy, so probably best to just remove
• It is probably now necessary to clarify that you can ask a question on SO without paying money or making an account and/or appropriate to direct people to rstudio forums instead