What is the precedence of the new |> pipe operator? I don't see it mentioned in ?Syntax, nor does it come up when I search the R Language Definition document.
Sent from my phone. Please excuse my brevity.
Pipe precedence
5 messages · Caitlin Gibbons, Eric Berger, Jeff Newmiller +1 more
I didn?t know R had a new pipe operator, but I have seen ?|>? (without quotes) used in the Elixir language though. Are there now two? ?%>%? from the magrittr package and ?|>? which is built-in?
On May 22, 2021, at 5:26 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us> wrote: ?What is the precedence of the new |> pipe operator? I don't see it mentioned in ?Syntax, nor does it come up when I search the R Language Definition document. -- Sent from my phone. Please excuse my brevity.
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
This is part of the R-4.1.0 release which came out a few days ago. See 1. https://stat.ethz.ch/pipermail/r-announce/2021/000670.html 2. https://www.jumpingrivers.com/blog/new-features-r410-pipe-anonymous-functions/ 3. https://community.rstudio.com/t/psa-r-4-1-0-release-requires-rstudio-preview/105209 Eric On Sun, May 23, 2021 at 6:07 AM Caitlin Gibbons <bioprogrammer at gmail.com> wrote:
I didn?t know R had a new pipe operator, but I have seen ?|>? (without quotes) used in the Elixir language though. Are there now two? ?%>%? from the magrittr package and ?|>? which is built-in?
On May 22, 2021, at 5:26 PM, Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:
?What is the precedence of the new |> pipe operator? I don't see it
mentioned in ?Syntax, nor does it come up when I search the R Language Definition document.
-- Sent from my phone. Please excuse my brevity.
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
R 4.1.0 was released this week with a new pipe operator and a new anonymous function shorthand (\(x) x^2). The pipe operator is not quite as flexible as the magrittr pipe, but it is faster (not that the magrittr pipe is noticably slow) and built-in.
On May 22, 2021 8:07:27 PM PDT, Caitlin Gibbons <bioprogrammer at gmail.com> wrote:
I didn?t know R had a new pipe operator, but I have seen ?|>? (without quotes) used in the Elixir language though. Are there now two? ?%>%? from the magrittr package and ?|>? which is built-in?
On May 22, 2021, at 5:26 PM, Jeff Newmiller
<jdnewmil at dcn.davis.ca.us> wrote:
?What is the precedence of the new |> pipe operator? I don't see it
mentioned in ?Syntax, nor does it come up when I search the R Language Definition document.
-- Sent from my phone. Please excuse my brevity.
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Sent from my phone. Please excuse my brevity.
On 22/05/2021 8:26 p.m., Jeff Newmiller wrote:
What is the precedence of the new |> pipe operator? I don't see it mentioned in ?Syntax, nor does it come up when I search the R Language Definition document.
It's the same precedence as the %any% operators listed in the ?Syntax table, so it matches the magrittr pipe priority. You can see this in the source if you know how to read Bison, or determine it experimentally: > 2 * 3 |> print() [1] 3 [1] 6 This is the same result as 2 * ( 3 |> print() ) so it has higher priority than * . On the other hand, > 2 : 3 |> print() [1] 2 3 is the same as ( 2 : 3 ) |> print() so it has lower priority than : . A difference with the magrittr operator is in debugging. If an error happens in the middle of a pipe, I find the traceback a little easier to understand with the built-in pipe: > 2 |> print() |> stop() |> mean() [1] 2 Error in mean(stop(print(2))) : 2 > traceback() 2: stop(print(2)) 1: mean(stop(print(2))) versus > 2 %>% print() %>% stop() %>% mean() [1] 2 Error in mean(.) : 2 > traceback() 3: stop(.) 2: mean(.) 1: 2 %>% print() %>% stop() %>% mean() Duncan Murdoch