From: ruby-core@... Date: 2015-02-22T02:24:05+00:00 Subject: [ruby-core:68221] [Ruby trunk - Feature #10880] Subclassing Array from Enumerator Issue #10880 has been updated by Marc-Andre Lafortune. > they should be very close They *are* very close: Enumerator.instance_methods - Array.instance_methods # => [:with_index, :with_object, :next_values, :peek_values, :next, :peek, :feed, :rewind] Which method(s) in there do you claim to use frequently? ---------------------------------------- Feature #10880: Subclassing Array from Enumerator https://bugs.ruby-lang.org/issues/10880#change-51582 * Author: Tsuyoshi Sawada * Status: Open * Priority: Normal * Assignee: ---------------------------------------- It often happens that I want to use a method from the `Enumerator` class on an array, and so I frequently use `Array#to_enum`. Since `Array` and `Enumerator` share the same parent `Enumerable`, they should be very close. I think it would be convenient if `Array` inherits from `Enumerator`. (Perhaps the same thing can be said for `Hash` too) -- https://bugs.ruby-lang.org/