The Reader monad.
A Reader[S, T] is a function that reads some environment (or state) S and returns some value T.
Funcs
func ask(S: typedesc): Reader[S, S]
- Can be used to retrieve the read state within a flatMap call. Source Edit
func ask[S](): Reader[S, S]
- Source Edit
func toReader[T](value: T; S: typedesc): Reader[S, T]
- Source Edit
func toReader[S; T](value: T): Reader[S, T]
- Source Edit
func map[S; A; B](self: Reader[S, A]; f: A -> B): Reader[S, B]
- Source Edit
func flatMap[S; A; B](self: Reader[S, A]; f: A -> Reader[S, B]): Reader[S, B]
- Source Edit
func local[S; T](self: Reader[S, T]; f: S -> S): Reader[S, T]
- Returns a Reader that will execute self in an environment modified by f. Source Edit