Haskell Core Libraries (base package) Parent Contents Index

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

Description

Random numbers.

class RandomGen g where

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

data StdGen

Instances RandomGen StdGen Show StdGen Read StdGen

mkStdGen :: Int -> StdGen

class Random a where

Methods random :: (RandomGen g) => g -> (a, g) randomR :: (RandomGen g) => (a, a) -> g -> (a, g) randoms :: (RandomGen g) => g -> [a] randomRs :: (RandomGen g) => (a, a) -> g -> [a] randomIO :: IO a randomRIO :: (a, a) -> IO a 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

Produced by Haddock version 0.4