Simple ruby pipelines

pipes.rb

class Object
  def | other
    case other
    when Proc
      if self.is_a?(Proc) 
        proc { |input| other.call( self.call(input) ) }
      else
        other.call(self)
      end
    else
      super
    end
  end
end

"ruby" |-> r { r.upcase }
#=> "RUBY"

pipeline = &:upcase | &:reverse
"ruby" | pipeline
#=> "YRUB"