From: "alexeymuranov (Alexey Muranov)" <redmine@...>
Date: 2013-03-02T04:45:51+09:00
Subject: [ruby-core:53088] [ruby-trunk - Feature #7994] Make iterators pass an implicit named parameter `iteration` to the executed block


Issue #7994 has been updated by alexeymuranov (Alexey Muranov).


Marc-Andre, thanks for the idea, i did not realize that `each_with_index` works with all enumerables.

However i was hoping that something like `unless iteration.first?` could be some day optimized away by a compiler to not check on every iteration.  I also do not see right away an incompatibility introduced by my second proposal (about the original one you are right).
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Feature #7994: Make iterators pass an implicit named parameter `iteration` to the executed block
https://bugs.ruby-lang.org/issues/7994#change-37238

Author: alexeymuranov (Alexey Muranov)
Status: Rejected
Priority: Normal
Assignee: 
Category: 
Target version: 


=begin
I think it would be nice to be able to write something like this:

  items.each do |item|
    unless iteration.first?
      # do something that is not applicable to the first iteration
    end
    # do whatever is to be done to all items
  end
=end



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