Motoyasu Yamada motoyasu-yamada

## bowling.u
use Either Right Left

{{ This type is used to capture the expected error message }}
unique type bowling.Error = Error Text

{{
  {score} takes in a list of numbers representing the pins knocked down for each roll of the bowling game, and should return either the total score or an error.
}}
bowling.score : [Nat] -> Either Error Nat
bowling.score rolls =
	use Either Right Left

	{{ This type is used to capture the expected error message }}
	unique type bowling.Error = Error Text

	{{
	{score} takes in a list of numbers representing the pins knocked down for each roll of the bowling game, and should return either the total score or an error.
	}}
	bowling.score : [Nat] -> Either Error Nat
	bowling.score rolls =