Created
July 25, 2012 16:25
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Identity Monad
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| trait Monad[M[_]] { | |
| def pure[A](a: A): M[A] | |
| def flatMap[A, B](f: A => M[B]): M[A] => M[B] | |
| def map[A, B](f: A => B): M[A] => M[B] = flatMap(a => pure(f(a))) | |
| } | |
| object Id { | |
| type Id[X] = X | |
| implicit val M: Monad[Id] = sys.error("todo") | |
| } |
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