Issue #4539 has been updated by Yui NARUSE.

Status changed from Open to Assigned
Assignee set to Yukihiro Matsumoto


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Feature #4539: Array#zip_with
http://redmine.ruby-lang.org/issues/4539

Author: Michael Kohl
Status: Assigned
Priority: Normal
Assignee: Yukihiro Matsumoto
Category: core
Target version: 


Inspired by Haskell's ((|zipWith|)) function, I hacked on together for 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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