# File lib/aws/dynamo_db/batch_write.rb, line 237 def str2sym key_desc type = key_desc.keys.first value = key_desc[type] case type when "S" then { :s => value } when "N" then { :n => value } when "SS" then { :ss => value } when "NS" then { :ns => value } else raise "unhandled key type: #{type.inspect}" end end