bundle install
> require "Rbpipe"
> include Rbpipe
> [1, 2] >> stdout
  [1, 2]
> piped(9) | stdout
  9
> [1, 2] >> concat
  1, 2
> [1, 2, 3, 4] >> even >> concat
  2, 4
> [1, 2, 3, 4, 5] >> select{|x| x < 4} >> where{|x| x > 1} >> as_list
  [2, 3]
> [1, 3] >> all? {|x| x > 0}
  true
> [1, 3] >> any? {|x| x > 2}
  true
> [[:a, 'b'], [:c, 'd']] >> as_dict
  {:a=>"b", :c=>"d"}

piped([1, 2]) | concat
piped([8, 9]) >> concat