gistfile1.rb

something = case option_type
  when OptionType then "do this"
  when String then "do this thing"
  else "how about this"
end

something = if option_type.class == OptionType
              "do this"
            elsif option_type.class == String
              "do this thing"
            else
              "how about this"
            end


if option_type.class == OptionType
  something = "do this"
elsif option_type.class == String
  something = "do this thing"
else
  something = "how about this"
end