Created
March 7, 2014 22:09
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Reader Monad
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| case class Reader[C, A](g: C => A) { | |
| def apply(c: C) = g(c) | |
| def map[B](f: A => B): Reader[C, B] = { | |
| Reader{ c => f(g(c)) } | |
| } | |
| def flatMap[B](f: A => Reader[C, B]): Reader[C, B] = { | |
| Reader{ c => f(g(c))(c) } | |
| } | |
| } |
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