[Haskell-beginners] random

[Tom Davie]

Or just randomRs :: (Random a, RandomGen g) => (a,a) -> g -> [a]

Bob

On Sun, Oct 25, 2009 at 2:05 AM, Brent Yorgey <byorgey at seas.upenn.edu>wrote:

> On Sat, Oct 24, 2009 at 05:59:35PM +0100, John Moore wrote:
> > Hi All,
> >            Can anyone help me I want to produce a list of three random
> > numbers for e.g. [7,8,1]
> > I tried using x <- getStdRandom $ randomR (1,10) but don't really
> understand
> > this and it only generates one number. Any help greatly appreciated.
>
> replicateM is your friend:
>
>  replicateM :: (Monad m) => Int -> m a -> m [a]
>
> so if 'foo' produces a single random number, then 'replicateM 3 foo'
> produces a list of three.
>
> -Brent
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