Feature #5766
closedHash.each_with_object should behave differently when block's arity is 3
Description
Enum.each_with_object is very handy in lots of situations, but specially while dealing with arrays. It would be great to be able to use it with hashes like below:
{a: 1}.each_with_object([]){|k, v, object| ...}
Currently, we need to do
{a: 1}.each_with_object([]) do |pair, object|
k, v = pair
...
end
Updated by matz (Yukihiro Matsumoto) over 12 years ago
Hi,
In message "Re: [ruby-core:41668] [ruby-trunk - Feature #5766][Open] Hash.each_with_object should behave differently when block's arity is 3"
on Thu, 15 Dec 2011 13:07:22 +0900, Rodrigo Rosenfeld Rosas rr.rosas@gmail.com writes:
|Enum.each_with_object is very handy in lots of situations, but specially while dealing with arrays. It would be great to be able to use it with hashes like below:
|
|{a: 1}.each_with_object([]){|k, v, object| ...}
Try
{a: 1}.each_with_object([]){|(k, v), object| ...}
Updated by rosenfeld (Rodrigo Rosenfeld Rosas) over 12 years ago
How do I close this issue?
Updated by rosenfeld (Rodrigo Rosenfeld Rosas) over 12 years ago
Em 15-12-2011 03:14, Yukihiro Matsumoto escreveu:
Hi,
In message "Re: [ruby-core:41668] [ruby-trunk - Feature #5766][Open] Hash.each_with_object should behave differently when block's arity is 3"
on Thu, 15 Dec 2011 13:07:22 +0900, Rodrigo Rosenfeld Rosasrr.rosas@gmail.com writes:|Enum.each_with_object is very handy in lots of situations, but specially while dealing with arrays. It would be great to be able to use it with hashes like below:
|
|{a: 1}.each_with_object([]){|k, v, object| ...}Try
{a: 1}.each_with_object([]){|(k, v), object| ...}
Great, thanks Matz! I didn't know that. I had tried {|[k, v], object|}
before but haven't think about the parenthesis :)
Updated by shyouhei (Shyouhei Urabe) over 12 years ago
- Status changed from Open to Closed