generalized method chaining and array as applicative

gistfile1.rb

class Array
  def >>(other); self + [other];  end

  def to_proc(*args)
    ->(r) { inject(r){ |o,(m,*args)| o.send(m,*args) } }
  end

  def apply(rec)
   self.to_proc[rec]
  end
end

class Symbol
  def >>(other);  [self,other] end
end

puts %w(foo bar baz).map(&:upcase >> :reverse)
puts (1..9).map(&[[:+,3],[:-,2]])