follesoe · December 24, 2010 14:18
diff --git a/RubyArray.rb b/RubyArray.rb
 # Ruby knows what you mean, even if you
 # want to do math on an entire Array
 cities  = %w[ London Oslo Paris
              Amsterdam Berlin ]
 visited = %w[Berlin Oslo]
 
 puts "I still need to visit the following cities:",
     cities - visited
	# Ruby knows what you mean, even if you
	# want to do math on an entire Array
	cities = %w[ London Oslo Paris
	Amsterdam Berlin ]
	visited = %w[Berlin Oslo]

	puts "I still need to visit the following cities:",
	cities - visited
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