Arnold deVos arnolddevos
arnolddevos
/ thing.scala
Last active
August 29, 2015 14:06
some sort of monad defined in terms of a sort of fold
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| package thing | |
| import scala.language.higherKinds | |
| trait Thing[+T, Context[_]] { parent => | |
| def foldish[S](s0: S)(f: (S, T) => Context[S]): Context[S] | |
| def map[U](g: T => U) = new Thing[U, Context] { | |
| def foldish[S](s0: S)(f: (S, U) => Context[S]) = | |
| parent.foldish(s0)((s, t) => f(s, g(t))) |
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