switch case in ruby

switch_case.rb

case a
when 1
  puts "Single value"
when 2, 3
  puts "One of comma-separated values"
when 4..6
  puts "One of 4, 5, 6"
when 7...9
  puts "One of 7, 8, but not 9"
when 1..4, 5
  puts "It's between 1 and 5"
else
  puts "Any other thing"
end

http://stackoverflow.com/questions/948135/how-can-i-write-a-switch-statement-in-ruby