gistfile1.rb

class Array
	alias_method :_each, :each 
	def each(&block)
		cpy = Array.new(self)
		cpy.pop
		cpy._each{|n| block.call(n) }
	end
end

a = [1,2,3]

a.each do |num|
#	puts num  # => 1,2
end

puts a.inspect 			# => puts [1, 2, 3]
puts a.reduce(:+) 	# => puts 3