Element access in an enumerable

enumerable_elements.rb

module Enumerable
	# Return elements after the first x
	def enum_after(x)
		a = 0
		self.partition{ a += 1; a < (x + 1) }.last
	end
	
	# Return elements with keys between x and y
	def enum_between(x,y)
		self.reject{|(k,v)| k < (x + 1) || (y - 1) < k }
	end
	
	def enum_between_inclusive(x,y)
		self.reject{|(k,v)| k < x || y < k }
	end
	
end