[ruby-core:96016] [Ruby master Feature#4539] Array#zip_with
From:
matz@...
Date:
2019-11-28 08:23:41 UTC
List:
ruby-core #96016
Issue #4539 has been updated by matz (Yukihiro Matsumoto).
* The name `zip_with` is too confusing with `zip`. We need a new name.
* The behavior can be described by the combination of `zip` and `map`.
* I am not sure how much we need this behavior (yet).
Matz.
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Feature #4539: Array#zip_with
https://bugs.ruby-lang.org/issues/4539#change-82857
* Author: citizen428 (Michael Kohl)
* Status: Assigned
* Priority: Normal
* Assignee: matz (Yukihiro Matsumoto)
* Target version:
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Inspired by Haskell's `zipWith` function, I hacked on together for Ruby:
```ruby
[1,2,3].zip_with([6,5,4], :+) #=> [7, 7, 7]
[1,2,3].zip_with([6,5,4]) { |a,b| 3*a+2*b } #=> [15, 16, 17]
```
So far I only have a Ruby version of it:
https://gist.github.com/731702b90757e21cadcb
My questions:
1. Would this method be considered a worthwhile addition to `Array`?
2. I've never hacked on the C side of Ruby (read some parts of the source though) and my C is quite rusty. I'd like to change that, would somebody be willing to help me turn this into a proper patch?
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