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rubyarraysiteratorwrapperenumerator

Return Enumerator without using existing iterators

How do I return Enumerator from my array wrapper without using already existing array iterators?

class MyArray

  def initialize
   @inner = []
  end

  def each
    index = 0
    while index < @inner.size
      yield @inner[index] if block_given?
      index += 1
    end
  end
end

I can't figure out how to avoid calling things like @inner.each at the end of the each method.

Solution

  • Given:

    @inner = [1, 2, 3]

    Code

    @inner.to_enum

    will return an enumerator.

    enum = @inner.to_enum
enum.each{|e| p e}
# => 1, 2, 3