[ruby-core:93103] [Ruby trunk Feature#15799] pipeline operator
From:
eregontp@...
Date:
2019-06-13 10:00:52 UTC
List:
ruby-core #93103
Issue #15799 has been updated by Eregon (Benoit Daloze).
Why was this accepted? I cannot see anyone really supporting this idea in this issue's comments.
As everyone said, it hurts readability, looks like Haskell, and there seems to be really no need for a different syntax for methods calls.
The example in the commit seems very unconvincing to me:
```ruby
# today
x = (12 ** 2).to_s(11)
# the new syntax
x = 12 |> pow(2) |> to_s(11)
```
It's even much longer.
----------------------------------------
Feature #15799: pipeline operator
https://bugs.ruby-lang.org/issues/15799#change-78527
* Author: nobu (Nobuyoshi Nakada)
* Status: Closed
* 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 {|e| e*2} |> (x)
p x #=> [2, 4, 6, 8, 10, 12, 14, 16, 18, 20]
```
https://github.com/nobu/ruby/tree/feature/pipeline
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