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System.Random Portability portable Stability provisional Maintainer libraries@haskell.org

Description

Random numbers.

class RandomGen g where

Methods genRange :: g -> (Int, Int) split :: g -> (g, g) next :: g -> (Int, g) Instances RandomGen StdGen

data StdGen

Instances RandomGen StdGen Show StdGen Read StdGen

mkStdGen :: Int -> StdGen

class Random a where

Methods randomRIO :: (a, a) -> IO a randomIO :: IO a randomRs :: (RandomGen g) => (a, a) -> g -> [a] randoms :: (RandomGen g) => g -> [a] randomR :: (RandomGen g) => (a, a) -> g -> (a, g) random :: (RandomGen g) => g -> (a, g) Instances Random Int Random Char Random Bool Random Integer Random Double Random Float

getStdRandom :: (StdGen -> (a, StdGen)) -> IO a

getStdGen :: IO StdGen

setStdGen :: StdGen -> IO ()

newStdGen :: IO StdGen

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