From: merch-redmine@jeremyevans.net
To: ruby-core@ruby-lang.org
Subject: [ruby-core:92838] [Ruby trunk Feature#15799] pipeline operator
Date: Sat, 25 May 2019 01:28:35 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-78217.20190525012834.18ced9fe58cdc101@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-15799.20190427083121@ruby-lang.org
Issue #15799 has been updated by jeremyevans0 (Jeremy Evans).
I think a pipeline operator can be helpful in a functional language, based on my experience with `$` in Haskell. However, I don't think it is a good idea to implement a replacement for the `.` operator just to avoid parentheses. If it has different semantics, maybe it could be useful, but it would depend on what those semantics are. Because Ruby uses methods instead of functions, I'm not sure what semantics we would want from a pipeline operator.
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Feature #15799: pipeline operator
https://bugs.ruby-lang.org/issues/15799#change-78217
* Author: nobu (Nobuyoshi Nakada)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
----------------------------------------
Implemented the pipeline operator `|>`, a topic of "ruby committers vs the world" in RubyKaigi 2019.
Also a casual idea of rightward assignment.
```ruby
1.. |> take 10 |> map {|x| x*2} |> (x)
p x #=> [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
```
https://github.com/nobu/ruby/tree/feature/pipeline
--
https://bugs.ruby-lang.org/
next prev parent reply other threads:[~2019-05-25 1:28 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <redmine.issue-15799.20190427083121@ruby-lang.org>
2019-04-27 8:31 ` [ruby-core:92432] [Ruby trunk Feature#15799] pipeline operator nobu
2019-04-27 10:28 ` [ruby-core:92433] " duerst
2019-04-27 13:23 ` [ruby-core:92436] " eregontp
2019-04-27 14:19 ` [ruby-core:92438] " shevegen
2019-04-28 1:26 ` [ruby-core:92453] " nobu
2019-05-01 1:53 ` [ruby-core:92506] " duerst
2019-05-19 22:05 ` [ruby-core:92725] " jonathan
2019-05-25 1:28 ` merch-redmine [this message]
2019-05-28 4:54 ` [ruby-core:92869] " konsolebox
2019-05-28 7:37 ` [ruby-core:92872] " konsolebox
2019-05-28 9:33 ` [ruby-core:92873] " matthew
2019-05-28 11:41 ` [ruby-core:92876] " zverok.offline
2019-05-28 13:45 ` [ruby-core:92877] " konsolebox
2019-06-12 6:36 ` [ruby-core:93060] " nobu
2019-06-12 13:35 ` [ruby-core:93073] " zverok.offline
2019-06-13 10:00 ` [ruby-core:93103] " eregontp
2019-06-13 11:43 ` [ruby-core:93105] " shevegen
2019-06-13 13:23 ` [ruby-core:93110] " dgutov
2019-06-13 14:09 ` [ruby-core:93111] " ttilberg
2019-06-14 0:12 ` [ruby-core:93118] " chris
2019-06-14 2:01 ` [ruby-core:93120] " joshua.goodall
2019-06-14 2:51 ` [ruby-core:93122] " keystonelemur
2019-06-14 3:00 ` [ruby-core:93125] " matz
2019-06-14 3:18 ` [ruby-core:93127] " merch-redmine
2019-06-14 5:42 ` [ruby-core:93129] " chris
2019-06-14 6:15 ` [ruby-core:93130] " keystonelemur
2019-06-14 7:45 ` [ruby-core:93133] " matz
2019-06-14 8:28 ` [ruby-core:93134] " keystonelemur
2019-06-14 10:30 ` [ruby-core:93135] " mail
2019-06-14 11:03 ` [ruby-core:93137] " rogeriocfj
2019-06-14 13:15 ` [ruby-core:93141] " cichol
2019-06-14 16:56 ` [ruby-core:93144] " sean.m.huber
2019-06-14 19:30 ` [ruby-core:93145] " konsolebox
2019-06-14 23:12 ` [ruby-core:93149] " dgutov
2019-06-16 0:17 ` [ruby-core:93167] " mame
2019-06-16 0:49 ` [ruby-core:93168] " samuel
2019-06-16 8:11 ` [ruby-core:93175] " josh.cheek
2019-06-16 15:29 ` [ruby-core:93188] " shannonskipper
2019-06-30 9:52 ` [ruby-core:93424] " eregontp
2019-06-30 10:19 ` [ruby-core:93425] " eregontp
2019-06-30 10:38 ` [ruby-core:93426] " eregontp
2019-06-30 11:53 ` [ruby-core:93428] " eregontp
2019-08-29 5:39 ` [ruby-core:94645] [Ruby master " matz
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