Control.Monad.Reader

MonadReader class

class MonadReader r m

asks

The Reader monad

type Reader r

runReader

mapReader

withReader

The ReaderT monad transformer

data ReaderT k r m a

runReaderT

mapReaderT

withReaderT

Example 1: Simple Reader Usage

Example 2: Modifying Reader Content With local

Example 3: ReaderT Monad Transformer