R devel - Jun 2021 - Additional an example for the forward pipe operator's documentation

> mtcars |> subset(cyl == 4) |> lm(formula = mpg ~ disp)
This isn?t really a reliable approach. It works for `lm()`, where `data` is the
second argument, but not for `glm()` unless the first _two_ arguments are named.

mtcars |> subset(cyl == 4) |> glm(formula = mpg ~ disp, family =
"gaussian")

It would basically never work for `metafor::rma()`, where `data` is over a dozen
arguments into the list.

In short, reliance on convenient placement of `data` in the argument list
probably isn?t something the documentation should encourage.

The anonymous function syntax can be made more aesthetically appealing through
effective use of indentation and line breaks
(https://twitter.com/bmwiernik/status/1402565800691634182?s=20), eg:

mtcars |> 
  subset(cyl == 4) |>
  ( \(data)
    lm(mpg ~ disp, data = data
  )()



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