> Error: function '::' not supported in RHS call of a pipe To me, this error looks much more friendly than magrittr's error. Some of them got too used to specify functions without (). This is OK until they use `::`, but when they need to use it, it takes hours to figure out why
mtcars %>% base::head #> Error in .::base : unused argument (head) won't work but mtcars %>% head works. I think this is a too harsh lesson for ordinary R users to learn `::` is a function. I've been wanting for magrittr to drop the support for a function name without () to avoid this confusion, so I would very much welcome the new pipe operator's behavior. Thank you all the developers who implemented this! Best, Hiroaki Yutani 2020年12月4日(金) 20:51 Duncan Murdoch <murdoch.dun...@gmail.com>: > > Just saw this on the R-devel news: > > > R now provides a simple native pipe syntax ‘|>’ as well as a shorthand > notation for creating functions, e.g. ‘\(x) x + 1’ is parsed as > ‘function(x) x + 1’. The pipe implementation as a syntax transformation > was motivated by suggestions from Jim Hester and Lionel Henry. These > features are experimental and may change prior to release. > > > This is a good addition; by using "|>" instead of "%>%" there should be > a chance to get operator precedence right. That said, the ?Syntax help > topic hasn't been updated, so I'm not sure where it fits in. > > There are some choices that take a little getting used to: > > > mtcars |> head > Error: The pipe operator requires a function call or an anonymous > function expression as RHS > > (I need to say mtcars |> head() instead.) This sometimes leads to error > messages that are somewhat confusing: > > > mtcars |> magrittr::debug_pipe |> head > Error: function '::' not supported in RHS call of a pipe > > but > > mtcars |> magrittr::debug_pipe() |> head() > > works. > > Overall, I think this is a great addition, though it's going to be > disruptive for a while. > > Duncan Murdoch > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel