random1.3.1

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      "This package provides basic pseudo-random number generation, including the\nability to split random number generators.\n.\n== \"System.Random\": pure pseudo-random number interface\n.\nIn pure code, use 'System.Random.uniform' and 'System.Random.uniformR' from\n\"System.Random\" to generate pseudo-random numbers with a pure pseudo-random\nnumber generator like 'System.Random.StdGen'.\n.\nAs an example, here is how you can simulate rolls of a six-sided die using\n'System.Random.uniformR':\n.\n>>> let roll = uniformR (1, 6)        :: RandomGen g => g -> (Word, g)\n>>> let rolls = unfoldr (Just . roll) :: RandomGen g => g -> [Word]\n>>> let pureGen = mkStdGen 42\n>>> take 10 (rolls pureGen)           :: [Word]\n[1,1,3,2,4,5,3,4,6,2]\n.\nSee \"System.Random\" for more details.\n.\n== \"System.Random.Stateful\": monadic pseudo-random number interface\n.\nIn monadic code, use 'System.Random.Stateful.uniformM' and\n'System.Random.Stateful.uniformRM' from \"System.Random.Stateful\" to generate\npseudo-random numbers with a monadic pseudo-random number generator, or\nusing a monadic adapter.\n.\nAs an example, here is how you can simulate rolls of a six-sided die using\n'System.Random.Stateful.uniformRM':\n.\n>>> let rollM = uniformRM (1, 6)                 :: StatefulGen g m => g -> m Word\n>>> let pureGen = mkStdGen 42\n>>> runStateGen_ pureGen (replicateM 10 . rollM) :: [Word]\n[1,1,3,2,4,5,3,4,6,2]\n.\nThe monadic adapter 'System.Random.Stateful.runStateGen_' is used here to lift\nthe pure pseudo-random number generator @pureGen@ into the\n'System.Random.Stateful.StatefulGen' context.\n.\nThe monadic interface can also be used with existing monadic pseudo-random\nnumber generators. In this example, we use the one provided in the\n<https://hackage.haskell.org/package/mwc-random mwc-random> package:\n.\n>>> import System.Random.MWC as MWC\n>>> let rollM = uniformRM (1, 6)       :: StatefulGen g m => g -> m Word\n>>> monadicGen <- MWC.create\n>>> replicateM 10 (rollM monadicGen) :: IO [Word]\n[2,3,6,6,4,4,3,1,5,4]\n.\nSee \"System.Random.Stateful\" for more details."
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