enumerable.rb

class DataModel
  include Enumerable

  def initialize data
    @data = data
  end

  def each
    @data.each { |x| yield x }
  end
end

data_model = DataModel.new [2,3,4]
p data_model.select { |x| x > 3 }
p data_model.any? { |x| x > 3 }

(1..Float::INFINITY).select { |x| x % 27 == 0 }.take(10)

(1..Float::INFINITY).lazy.select { |x| x % 27 == 0 }.take(10)

(1..Float::INFINITY).lazy.select { |x| x % 27 == 0 }.take(10).to_a