[Haskell-cafe] Convert IO Int to Int

[Miguel Mitrofanov]

"r <- randomRIO (1,10)" is NOT the source of error. Why do you think it is?

ptrash wrote on 10.06.2009 15:55:
> Hi, 
> 
> I have tried on the console to write
> 
> x <- randomRIO(1,10)
> :t x
> 
> Everythings fine and the type of x is
> x :: Integer
> 
> Now I have tried to write a Method which gives me a Number of random numbers
> the same way but it doesn't work.
> 
> randomList :: Int -> [Integer]
> randomList 0 = []
> randomList n = do
>                              r <- randomRIO (1, 10)
>                              r:randomList(n-1)
> 
> It says   Couldn't match expected type `IO t' against inferred type `[t]'
> r <- randomRIO (1,10) causes an error. But why does it work on the console?
> Is there a way to solve it another way?