Shovel Out, Elixir-Inspired Irresponsible Programming in Ruby

shovel_out.rb

Object.class_eval do
  def >>(callable = nil, &block)
    raise ArgumentError.new('>> takes a callable or block') unless callable.nil? ^ block.nil?
    (callable || block).call self
  end
end

Enumerable.class_eval do
  def >>(callable = nil, &block)
    raise ArgumentError.new('>> takes a callable or block') unless callable.nil? ^ block.nil?
    map &(callable || block)
  end
end

[ Fixnum, Bignum, Process::Status ].each do |klass|
  klass.class_eval do
    original_shovel_out = instance_method(:>>)
    define_method :>> do |*args|
      raise ArgumentError.new("#{klass}#>> takes an Integer, callable, or block") unless block_given? || args.length == 1
      return yield(self) if block_given?
      arg = args[0]
      return original_shovel_out.bind(self).call(arg) if arg.respond_to?(:to_i)
      callable.call self
    end
  end
end

double = lambda { |x| x * 2 }
'hello' >> double # 'hellohello'
12 >> double # 24
[5, 6, 2] >> double #  [10, 12, 4]

Thanks, @josevalim, for inspiring me with |>
Thanks, @steveklabnik, for recommending Irresponsible Programming :)