Some examples for the case method in Ruby.

case.rb

case var
  when 1
    puts 1
  when 2
    puts 2
  else
    puts 'none'
end

case var
  when 1 then p 1
  when 2 then p 2
  else p 'none'
end

message = case var
  when 1 then 1
  when 2 then 2
  else 3
end