Early Escape

class Test
include Enumerable

  def initialize(arr)
    @arr = arr
  end

  def each(&block)
    @arr.each do |el|
      puts "start #{el}"
      block.call(el)
      puts "end #{el}"
    end
  end
end

> t = Test.new [0, 1, 1, 2, 3, 5]
=> #<Test:0x100348b80 @arr=[0, 1, 1, 2, 3, 5]>
> t.find {|n| n > 1}
start 0
end 0
start 1
end 1
start 1
end 1
start 2
=> 2